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KWIKSTAT Condensed Version of Manual "Bare Bones Edition" by Alan C. Elliott Mission Technologies P.O. Box 1169 Cedar Hill, Texas 75104 (214)-291-2115 September, 1986 Version 1.0 (C)Copyright 1983, 1986, Mission Technologies. All Rights Reserved The KWIKSTAT distribution diskettes, containing a copy of this manual, may be freely copied and shared, but printed copies of this manual may not be copied in any way without written permission from the author. All files on diskettes must remain unaltered. Thank You. Additional copies of this manual, bound, illustrated, and more complete, may be purchased from Mission Technologies. Order blanks are provided in this manual and in the file named ORDER which is on diskette number one. No patent liability is assumed with respect to the use of the information contained herin. While every precaution has been taken in the preparation of this publication, the publisher assumed no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information herein. 1 KWIKSTAT 1.0 __________________________________________________________ CONTENTS INTRODUCTORY MATERIAL DISKETTES AND PROGRAMS..................................3 USING KWIKSTAT ON A HARD DISK...........................4 USING KWIKSTAT ON A FLOPPY DISK.........................5 SUMMARY INSTRUCTIONS FOR OPERATION......................6 FIRST TIME TUTORIAL.....................................7 PROGRAM OPERATION SECTION 1:ENTERING DATA.................................12 SECTION 2:KWIKSTAT OVERVIEW.............................15 SECTION 3:DESCRIPTION OF SPECIFIC MODULES...............16 REPORT..............................................16 STAT1:Descriptives and Graphics.....................17 STAT2:t-tests and ANOVA.............................18 STAT3:Regression....................................20 STAT4:Survival Analysis.............................21 APPENDICIES SAMPLE DATA SETS ON DISK................................22 ORDER INFORMATION.......................................23 USER'S BALLOT...........................................24 BUG REPORT..............................................25 REFERENCES..............................................26 2 KWIKSTAT 1.0 __________________________________________________________ DISKETTES AND PROGRAMS KWIKSTAT is distributed on two diskettes, Disk 1 and Disk 2. These diskettes contain the KWIKSTAT programs, and supporting files. For a KWIK description of how to load and use KWIKSTAT, place disk 1 in the default drive and type "GO". Contents of each disk should be: DISK 1 GO.BAT - Tells you preliminary information READ.ME - File containing current information - READ IT! DATA.EXE - KWIKSTAT program to create, enter and edit data STAT1.EXE - KWIKSTAT descriptive statistics & graphics STAT2.EXE - KWIKSTAT t-tests and ANOVA KS.BAT - Batch file to begin KWIKSTAT KWIKLOAD.BAT - Used to load KWIKSTAT to hard disk KWIKSTAT.HLP - KWIKSTAT help file ORDER - How to become a registered user, order manuals DISK 2 READ.ME - File containing current information - READ IT! REPORT.EXE- Report module STAT3.EXE - Simple linear and multiple linear regression STAT4.EXE - Survival Analysis KS.DOC - This document, condensed manual *.DBF - Some sample databases *.DAT - some sample ASCII data files KWIKLOAD.BAT - Used to load KWIKSTAT to hard disk KSROOT.BAT - Batch file for root directory KWIKSTAT.HLP - KWIKSTAT help file. 3 KWIKSTAT 1.0 __________________________________________________________ REQUIREMENTS TO RUN KWIKSTAT 1. An IBM PC, XT, AT or compatible computer. 2. DOS 2.0 or higher 3. At least 196K of memory (some parts will run on 128K of memory) 4. A graphics, EGA or PGA monitor. (Graphics portions will not be shown on non-graphics screens) INSTALLING KWIKSTAT The next section describes how to prepare KWIKSTAT for use on a hard disk system or on a floppy disk system. PREPARING KWIKSTAT FOR USE USING KWIKSTAT ON A HARD DISK A hard disk is recommended for using Kwikstat, although it may be used on floppy disks, as described under the heading "Using KWIKSTAT on Floppy Disks". The procedure described here load KWIKSTAT on the hard disk drive C, in a sub-directory named C:\KWIKSTAT. STEP 1:Place the KWIKSTAT disk number 1 in drive A. Make A the default drive, by entering the command: A: Next, enter the command: A>KWIKLOAD Follow the instructions on the screen, and all necessary files will be loaded. STEP 2:Graphics command In order to print a graphics plot to the printer, the DOS command file GRAPHICS.COM must be available. There are two ways to insure this. Method one (recommended) is to make 4 KWIKSTAT 1.0 __________________________________________________________ sure a PATH is set up to tell DOS where to find the command (SEE PATH COMMAND IN DOS MANUAL). The best way to do this is to place a PATH command in your AUTOEXEC.BAT file in your ROOT directory. For example, if your DOS commands are in a subdirectory named DOS, the following path should be in the AUTOEXEC.BAT file: PATH \;\DOS The PATH command is activated when you boot the computer. A second method of making GRAPHICS.COM available is to copy it from your DOS disk into the KWIKSTAT subdirectory. GO FORWARD TO THE SUMMARY INSTRUCTION SECTION... ------------------------------------------------ USING KWIKSTAT ON FLOPPY DISKS STEP 1:Format two diskettes. This can be done by placing the DOS disk in drive A, and a blank disk in drive B, and entering the command: FORMAT B: We will call these diskettes "WORKING DISKETTES 1 and 2". STEP 2:Copy files to Working Diskettes All KWIKSTAT programs can operate by themselves. That is, only the ".EXE" file is required. (The KWIKSTAT.HLP file is also required if you intend to ask for help.) Therefore, you may place the programs you need most on one disk, and the other programs on the second disk. For example, a basic system (Working disk 1) may include the DATA.EXE program, STAT1.EXE and STAT2.EXE. Place the programs REPORT.EXE, STAT3.EXE and STAT4.EXE on Working Disk 2. If you are using Working Disk 1, and want to run a program on Working Disk 2, you will need to QUIT, change diskettes, and begin the desired program. Copy the files from the KWIKSTAT diskettes to the Working Diskettes, placing the programs you want on each working copy. Copy the file GRAPHICS.COM from the DOS disk to the 5 KWIKSTAT 1.0 __________________________________________________________ Working Diskettes, and the file KWIKSTAT.HLP from the KWIKSTAT disk number 1 to both working copies. Sample databases Copy the files "*.DBF" and "*.DAT" from the KWIKSTAT disk 2 to a formatted floppy disk. This disk will contain the examples mentioned in the remainder of the manual. STEP 3:Set Graphics Before entering KWIKSTAT, activate the graphics mode by entering the command: A>GRAPHICS Alternately, you may copy the batch file KS.BAT to the Working Diskette containing DATA.EXE, and modify this batch file for Working Disk 2 (using Edlin or another ASCII editor) to begin the desired startup program. The ".BAT" batch files simply issues the GRAPHICS command, and then begins an initial KWIKSTAT module. If you are using floppy disks, it is recommended that the program be run from disk A, and the data be stored on disk B. For the examples in the text, place the disk containing the example databases in drive B. In order to do this YOU MUST SET UP AN INITIALIZATION FILE in the DATA module before doing the examples. Make sure the file KS.INI, created by the initialization routine is copied to Working disk 2. If your disk AND program are on the same disk, this file is not needed. SUMMARY INSTRUCTIONS FOR OPERATION STARTUP Assuming you are using a hard disk, get into the KWIKSTAT directory using the command: C>CD \KWIKSTAT To begin KWIKSTAT, enter the command: 6 KWIKSTAT 1.0 __________________________________________________________ C>KS NOTE:On hard disk, you must be in the KWIKSTAT subdirectory. If you are using floppies, you may need to enter the GRAPHICS command first, followed by a KWIKSTAT module name. FIRST TIME TUTORIAL This short tutorial will give you a feeling for how to use KWIKSTAT. It is not intended to be thorough, but simply to lead you though a common procedure. It will assume you are using KWIKSTAT on a hard disk. If you are using floppies, you will need to be aware of the differences which may occur, such as the need for an initialization file. Begin KWIKSTAT with the KS command. C>KS This places you in the DATA module. Notice the two part menu. Items numbered in single digits are procedures of this module. Items numbered 90 to 99 are additional procedures. Items 90 to 99 will always mean the same thing. Items 1 to 9 change depending which module you are currently using. 7 KWIKSTAT 1.0 __________________________________________________________ MENU FOR DATA MODULE ------------------------------------------------------------------ 1 ) Create a new database - (enter data from keyboard or file) 2 ) Enter data from keyboard into a previously created database 3 ) Read data from and ASCII file into previously created database 4 ) Edit records 5 ) Pack -- Get rid of all records marked for delete 6 ) Set up default file path 90) HELP 91) Go to REPORTS 92) Goto STAT1:Descriptives and Graphics 93) Goto STAT2:t-test and ANOVA 94) Goto STAT3:Regression 95) Goto STAT4:Survival Analysis 99) End this program Choose: _ ------------------------------------------------------------------ To see the HELP menu, type 90, and press the ENTER key: Choose: 90 This will display the HELP menu for KWIKSTAT... ---------------------------------------------------------- KWIKSTAT Help Screens How to Enter Data....................................1 How to use data from a dBASE III file................2 : etc. Enter SCREEN NUMBER or Enter to Cancel:8 ---------------------------------------------------------- The HELP menu lists major topics, and the screen number at which that topic begins. You can think about the HELP procedure as a book, with screens instead of pages. It is really a condensation of the manual. To look at a particular topic, enter the screen number you desire. For example, look at screen 8 (Descriptive Statistics). Type the number 8, and 8 KWIKSTAT 1.0 __________________________________________________________ press Enter: Enter SCREEN NUMBER or Enter to Cancel:8 KWIKSTAT now displays screen number 8. To move to screen number 9, press Enter. To go back to the menu, type the "M" key. To exit the HELP module, press the "Esc" key. Press the Esc key now. This takes you back you the main KWIKSTAT DATA MODULE MENU. Take a look at Descriptives If we wanted to enter data from the keyboard, we would do so in this module. How to do this is explained later. For this example, we will be using data already created, and in a dBASE ".DBF" file currently on disk. To go to the Descriptive Statistics module (STAT1), type 93 at the "Choose:" prompt, and press Enter. Choose:93 It takes a few seconds to swap modules. Soon, you will see an initial screen which gives a directory of all ".DBF" files on disk, and prompts you to choose the one to use. For this example, enter the name EXAMPLE. Enter dBASE III file to use (.DBF assumed):EXAMPLE KWIKSTAT will load the file, and present the STAT1 menu. (NOTE:There are some procedures which do not require input from a database. By entering a blank name, you may proceeded with no database in use.) 9 KWIKSTAT 1.0 __________________________________________________________ ----------------------------------------------------- 1) Choose another database to use 2) Detailed statistics on a single variable 3) Summary statistics on a number of variables 4) P-value determination 5) Contingency Table Analysis (Crosstabulations) 6) 3-Dimensional bar graph (Enter data in number 5 first) 7) Histogram 8) XY-Plot (Scatterplot) 90) HELP : : 99) End this program Enter choice:2 ------------------------------------------------------ Enter the number 2 as your choice. The program now displays the variables available: ------------------------------------------------------ Fields which are numeric are: 2)AGE 3)TIME1 4)TIME2 5)TIME3 6)TIME4 7)STATUS Enter a single field number :2 ------------------------------------------------------ Enter the number 2 to select the AGE variable, and press Enter. The program will now perform a series of calculations on the data, and will produce a screen of descriptive statistics, and a box plot of the data. If you want a printed copy of this screen, MAKE SURE YOUR PRINTER IS TURNED ON, and is ON LINE, and HAS PAPER. Then, press Shift-Prtsc. Notice that this is a graphics screen, and generally takes longer to print than a normal screen. Any time you want a copy of the results on the screen, use the Shift-Prtsc command. To return to the main menu, press the Enter key. 10 KWIKSTAT 1.0 __________________________________________________________ To QUIT, enter 99 and press Enter. This takes you back to DOS. This ends this brief tutorial. All of the procedures are explained more fully later in the manual. However, it should be easy enough, that with one brief reading, you can use KWIKSTAT without the aid of the manual. If you forget something, it will probably be covered on a HELP screen. SOMETHING GOES WRONG If (or when) something goes wrong, check the manual, and check your work. If you cannot seem to resolve the problem, please fill out the BUG REPORT in the appendix, and send it in right away, so that errors in the program can be eliminated. If you have a suggestion for how to improve KWIKSTAT, please fill out the USER'S BALLOT in the appendix. Thanks for your help. 11 KWIKSTAT 1.0 __________________________________________________________ SECTION 1:ENTERING DATA Data may be entered from the keyboard, or from an ASCII text file. Data already stored in a dBASE III file may be read directly into all the KWIKSTAT programs. If data is stored in a dBASE II file, it must be converted to the dBASE III format to work. The dBASE III program has a "BRIDGE" program which will do this conversion. Or, you may write out the dBASE II file as an SDF file, and read it into KWIKSTAT using the DATA program. In fact, if a program you are using can output the data in a standard ASCII file, the data can be moved into KWIKSTAT using the procedures explained here. ENTERING DATA (From keyboard or ASCII file) STEP 1:Create the structure of your database by selecting the "CREATE" option in the DATA module. Define names for each variable, maximum width of the field, and type of variable. (Character, Numeric, Date, Logical). Limitations: o Maximum of 128 fields. o Maximum width of a field name is 10 characters. o Maximum width of a cell is 60 characters (15 for numbers) o Dates are always 8 characters and logical fields are 1 characters wide. If you will be entering data from an ASCII file, the field widths MUST match the width of the columns of data on file. If there are spaces between columns of data, make widths wide enough to account for those spaces. For example: Data in the file looks like this: 12 KWIKSTAT 1.0 __________________________________________________________ A 23 100.2 A 32 90.5 B 22 101.2 : etc. : C 33 99.7 ^ ^ ^ | | |--->NAME:SCORE, TYPE:Numeric, WIDTH:6, DECIMALS:1 | |-------->NAME:AGE, TYPE:Numeric, WIDTH:3, DECIMALS:0 |---------->NAME:GROUP, TYPE:Character, WIDTH:1 Define three fields GROUP, AGE, SCORE as types Character, Numeric and Numeric respectively, and with widths 1, 3, and 6. Specify 1 decimal place for field SCORE. Notice that the widths 3 and 6 include one column that is blank, so that the data is specified in a continuous manner. The program will display areas to enter Name, Type, Width, and number of decimal places. In the Type field, you only need to enter the first character of the type, (N, C, L or D). Width is the number of characters reserved for the entry. Decimal is the number of decimal places (only relevant for numbers). Note that the number of decimal places must be at least one less than the width. For example, if a number has the format ###.##, the width is 6 (count the decimal point), and the number of decimal places is 2. If DATE or LOGICAL is entered as type, the program will automatically assign a width of 8 or 1 respectively. Once a complete field description is entered, a next blank field description will appear, ready for entry. To finish, type Control-END (^END). The End key is on the numeric pad. As long as you have not ended the procedure, you may use the cursor keys to back up, and make any corrections. If you mess up royally, end the procedure, and begin again. After entering information, press CTRL-End (^End) to exit the create procedure. STEP 2:If you are entering data from the keyboard, answer "Y" to the question "ENTER DATA FROM KEYBOARD NOW (Y/N)" Otherwise answer "N". 13 KWIKSTAT 1.0 __________________________________________________________ KEYBOARD ENTRY... If you are entering data from the keyboard, an entry screen will appear, and you may begin entry. If you need to go back to a previously entered record to edit, pressing the PgUp key will automatically place you into edit mode. To end keyboard entry, press ^End. ENTER DATA FROM A FILE... Choose the menu option "Read data from ASCII file". You will be asked the name of the file. Enter the complete file specification (ie \MYDIR\MYDATA.DAT). There is no need to enter the disk name or drive name if the data is in the same directory as the default disk and directory. The data will be entered into the database, and a count of the records as they are entered will be displayed. It is a good idea to go to the EDIT procedure to look at the data to verify that it has been entered correctly. If the data does not match the fields, refigure the widths of each field to make sure it matches the columns of data in the disk file, and try again. HOW TO USE DATA FROM A DBASE III FILE KWIKSTAT can read data directly from a dBASE III file. In each module, you may specify which dBASE file to use. The module will display all ".DBF" files in the default directory. However, you may also call files from other directories using drive and path names. For example, if you wish to access a DBF file in the subdirectory named DB3, you would specify the name of the database "MYBASE" as \DB3\MYBASE or C:\DB3\MYBASE It is important to prepare your dBASE file before analyzing it in KWIKSTAT. Perform all transformations, creation of new variables, grouping variables, etc. using dBASE. 14 KWIKSTAT 1.0 __________________________________________________________ SECTION 2:KWIKSTAT OVERVIEW HOW KWIKSTAT WORKS KWIKSTAT performs a number of statistical and report procedures on data stored in a DBF file. Some procedures also allow you to enter data during the analytical session. Here are the basic divisions of KWIKSTAT: Module Function ------ ----------------------------------------------- DATA Create a database, enter and edit data REPORT Output reports about the data, output ASCII text files, and examine the contents of the database or other files. STAT1 Descriptive statistics, graphical presentations STAT2 Comparative statistics. t-tests and One Way Analysis of Variance (ANOVA) on independent or repeated observations. STAT3 Regression:Simple and Multiple Linear Regression STAT4 Survival Analysis, Life Tables, Plots ------ ----------------------------------------------- 15 KWIKSTAT 1.0 __________________________________________________________ SECTION 3:DESCRIPTION OF SPECIFIC MODULES REPORTS KWIKSTAT allows you to output data to a file or printer in the REPORTS Module. 1 - Choose another database. 2 - Output SDF file - You may output the data into a standard ASCII TEXT file. (SDF file- Standard Data Format file). This is useful for transferring the data to other programs. Along with the output of data, you may also output a "format" file, which describes the contents of the text file. This file can be output in "DBASE" style or "SAS" style. The SAS format could be used in a SAS INPUT statement to read the ASCII data file into the SAS program. 3 - Output REPORT - You may output a listing of the data in the dataset (or a selected subset of the database). In this procedure you may specify such report features as column headings, inclusion of record number on the report, width and length of a page, and title of the report. You may also use a selection procedure to output a report on a subset of the database. This procedure is menu driven. Simply answer the questions as you are prompted. If the report is too wide to fit on the paper, it will be printed in parts. 4 - Display a record - Displays a particular record from the database on the screen. 5 - Display Structure - Displays the structure of the data to the screen, printer, or file. 6 - Directory of files on disk - allows you to examine the directory of file on disk. 16 KWIKSTAT 1.0 __________________________________________________________ 7 - Examine contents of a file. Allows you to look at the contents of an ASCII file. This is helpful for when you create a REPORT, or write data to an SDF file. You can look at the results without leaving the program. STAT1:DESCRIPTIVE STATISTICS AND GRAPHICS In the STAT1 module, you may examine summary statistics of the data in the database. Your options are as follows: CONTINUOUS DATA:Detailed statistics on one variable or summary statistics on a number of variables. Categorical data:A crosstabulation of the data may be created using the contingency table option. Paired data:Examine relationship by plotting a scatterplot. Graphics are used throughout the system to enhance understanding of certain statistical procedures. Graphics used in STAT1 include: o HISTOGRAM : examine the distribution of a continuous variable o SCATTERPLOT : examine the relationship between two variables o BOX PLOT : method of looking at the distribution of the data (0, 25th, 50th, 75, and 100 percentile) o 3-D BAR CHART: examine three dimensions of a table of counts (enter data in contingency table procedure). Details on specific procedures by selection number: 1) Switch to another database to use. 2) Detailed statistics on a single variable - Calculates mean, st. deviation, median, st. error of the mean, minimum, maximum, sum, variance, Tukey 5 number summary (0, 25th, 50th, 75th and 100th percentile), and displays a box plot of the 5 number summary. 3) Summary statistics on a number of variables:Choose a list 17 KWIKSTAT 1.0 __________________________________________________________ of variables from the database. Statistics calculated include sample size, mean, st. deviation, minimum, and maximum, and SEM. 4) P-value determination:calculates a p-value for normal (Z), student's t, F, or Chi Square statistic. (Two sided) 5) Contingency Table Analysis:Enter data from keyboard or from database -- performs Chi-Square and, where appropriate, Fisher's exact test, and Yates Chi-Square. 6) 3-Dimensional bar graph:Enter data in selection number five. This procedure produces a three dimensional bar graph. It also allows you to view a "slice" of the chart at a time, to see details of values which may be obscured by other bars. To view menu after plot is on screen, press the <Space Bar>. 7) Histogram:Produces a histogram from values read from the database. It allows you to specify width, height and gap in the histogram. After the chart is displayed, use the cursor keys to move the pointer to the spot on the screen where you want the key to be displayed. Pressing the "D" key will display the key in the location of the pointer. Pressing the <Space Bar> will display a menu at the bottom of the screen. You may replot as many times as desired, adjusting your options for the plot you want. To print this graph, wait until the menu on the bottom line disappears, then press Shift-Prtsc. Press Esc to go back to menu. 8) Scatterplot:Produces a scatterplot of two variables. This procedure allows you to specify horizontal and vertical axis, as well as title for the plot. Pressing the Space bar will reveal a menu. To print this plot, wait until the menu on the bottom line disappears, then press Shift-Prtsc. Press Esc to go back to menu. STAT2:t-Tests and ANOVA's The STAT2 module performs t-tests and One Way Analysis of Variance on independent groups or repeated measures. 18 KWIKSTAT 1.0 __________________________________________________________ Independent groups are observations taken from groups in which subjects in one group do not appear in another group. Repeated measures are observations taken on subjects over time or in differing circumstances. Examples would be weight loss, or reaction to a drug across time. Repeated measures may also be matched subjects. See textbooks by Zar, Winer, Dixon and Massey, and others for a more complete explanation. In this module, a t-test is performed when there are two groups (or two repeated measures). For 3 to 10 groups or repeated measures, an Analysis of Variance is performed. The ANOVA attempts to determine if there is a difference in the means across groups or repeated measures. If the p-value for the ANOVA is small (ie 0.05 or less), you may suspect that there is a difference. However, the ANOVA does not tell us where that difference lies. A multiple comparison procedure (Newman-Keuls) may be performed at the 0.05 significance level to determine which specific groups have means different from each other. This procedure produces a chart illustrating these differences. An example is: 2 3 1 4 5 Population 1 -------------- Population 2 --------- Population 3 ---- This chart illustrates the results of a Newman-Keuls Multiple comparison test. The numbers from 1 to 5 at the top are the means of the groups in ranked order according to the data in each of the five groups. Thus, group 2 has the smallest mean, and group 5 has the largest mean. A "population" is one or more means that are determined to have statistically (at the 0.05 level) equal means. Thus, this test suggests that the means for groups 3, 1 and 4 are not different from each other. Population 2 suggests that the mean of group 2 is not different from the mean of group 3, but it IS different (smaller) than the means of group 1, 4 and 5. The mean of group 5 is larger than all of the other groups. Using this chart, you may compare the means of any two groups. All such comparisons are assumed to be performed 19 KWIKSTAT 1.0 __________________________________________________________ at the 0.05 level of significance (alpha level). STAT3:REGRESSION This module performs simple linear regression and multiple linear regression. SIMPLE LINEAR REGRESSION: o Analyzes linear relationship between paired observations. o The equation of the line is calculated. o Pearson's correlation coefficient is calculated. o t-test for significance of slope (correlation coefficient). o Scatterplot of raw data and plot of residuals from linear fit. MULTIPLE LINEAR REGRESSION: o The coefficients to the equation of the line are calculated. o A test of significance is given for each coefficient, and for the intercept term. o R-Square is calculated for the model, as well as adjusted R-Square. o An Analysis of Variance is performed for the model. o A plot of residuals from the fit is available. You may plot the fit against any of the terms. 20 KWIKSTAT 1.0 __________________________________________________________ STAT4:SURVIVAL ANALYSIS Module STAT4 performs Life Table and Survival Analysis on a set of data. The data must be in the following form: A TIME variable:This variable should contain a time variables (ie minutes, days, years, etc) in which the subject has been observed to be alive (not-failed). A CENSOR variable:This variable must take on the values 0 or 1. A 1 means the subject has died (failed), and a 0 means the subject was still alive (not-failed) at the last available time period. Optionally, a GROUP variable:This variable may contain a grouping variable (numeric or character) of up to 10 groups. Once the data is entered into the program, a life table for each group is produced which includes, for each time interval, the number entered, withdrawn, lost, dead, exposed, proportion dead, surviving, cumulative surviving, hazard and density. A plot is given for the group or groups cumulative proportion surviving. If more than one group is entered, a Mantel-Haenszel test is performed to test the hypothesis of equal survival patterns for each group. 21 KWIKSTAT 1.0 __________________________________________________________ APPENDIX I SAMPLE DATA SETS ON DISK LIFE.DBF - A file containing data for use in illustrating STAT4:SURVIVAL analysis. This data is from Prentice (1973). The data contains a survival time variable, a censor variable and a grouping variable. EXAMPLE.DBF contains the fields GROUP, AGE, TIME1, TIME2, TIME3, TIME4, and STATUS. Data can be used to illustrate Repeated Measures (Use TIME variables), or Independent group ANOVA (Use GROUP as grouping factor). It can be used for Crosstabulation (Use GROUP and STATUS). After performing a crosstabulation, display a 3-D bar chart. This is a good data set to experiment with the histogram, and summary statistics in STAT1. EX.DAT is the raw data, from which a database like EXAMPLE.DBF could be created using the DATA module. In the DATA module, create a new database, with the fields: FIELD TYPE WIDTH DEC --------- ------ ------- ------ GROUP CHAR 1 - AGE NUM 4 0 TIME1 NUM 5 1 TIME2 NUM 5 1 TIME3 NUM 5 1 TIME4 NUM 5 1 STATUS NUM 2 0 LONGLEY.DBF - Data from Longley(1946). Use this data to test the Multiple Regression Procedure. The variable TOTAL is the dependent variable and the rest are independent variables. 22 KWIKSTAT 1.0 __________________________________________________________ APPENDIX II Order information for KWIKSTAT KWIKSTAT complete package, bound manual, registration, diskettes ($35) x ________= $____________ KWIKSTAT Manual ($10 each) x __________ = $____________ (You must be a registered user to order manuals) Order update of KWIKSTAT distribution diskettes ($10 per set) x ___________ = $____________ Add $4.00 Postage and Handling $ 4.00 TOTAL ENCLOSED $ ============ Payment method:check one _____ Check or M.O. _____ Credit Card (MC or VISA) ------------------------------------------------------------ IF CREDIT CARD: Name on Card:_____________________________________________ Type Card is __________________ Exp Date is:_____________ Card Number is:___________________________________________ Authorized Signature:_____________________________________ ----------------------------------------------------------- Mail order to:____________________________________________ Address:__________________________________________________ City:___________________ St_______ ZIP ___________________ Phone ( )______________________________________________ ----------------------------------------------------------- Please mail to:Mission Technologies, P.O. Box 1169, Cedar Hill, Texas 75104. Thanks. MAIL TODAY! 23 KWIKSTAT 1.0 __________________________________________________________ APPENDIX III USER'S BALLOT Please indicate your preference for improvements in KWIKSTAT. On a scale of 1 to 10 0 = Very Low priority for this change 10 = Very High priority for this change Your Vote Proposed item of change ---- ---------------------------------------------- ____ Better control for print out of results. ____ "BY GROUP" capability in listing and summary statistics. ____ Missing value code support ____ Add multi-way ANOVA ____ Add Non-parametric statistical tests ____ Data transformation support in the DATA module ____ Add General Linear Model module ____ Make Report more flexible ____ Add "NOT" match in report output ____ Add test for equality of variance ____ Add t-test for unequal variances ____ Add stem and leaf plot ____ Add time series analysis ____ Speed up calculations ____ Add more graphics (ie Pies, Plots, etc) ____ _____________________________________________ ____ _____________________________________________ ____ _____________________________________________ ____ _____________________________________________ ____ _____________________________________________ ____ _____________________________________________ ____ _____________________________________________ ____ _____________________________________________ ____ _____________________________________________ ----------------------------------------------------------- Mail to:Mission Technologies, P.O. Box 1169, Cedar Hill, Texas 75104. Thanks. 24 KWIKSTAT 1.0 __________________________________________________________ APPENDIX IV Bug Report for KWIKSTAT Please explain in detail the problem that occurred. If possible, send a print out of the results or Print Screen. --------------------------------------------------------- --------------------------------------------------------- Mail to:Mission Technologies, P.O. Box 1169, Cedar Hill, Texas 75104. Thanks. 25 KWIKSTAT 1.0 __________________________________________________________ References Dixon, W.J., and Massey, F.J., INTRODUCTION TO STATISTICAL ANALYSIS, McGraw-Hill Book Company, New York, 1969. Longley, J.W. "An appraisal of least squares programs for the electronic computer from the point of view of the user." JASA, 1967, 62, 819-831 Neter, J. and Wasserman, W., APPLIED LINEAR STATISTICAL MODELS, Richard D. Irwin, Inc, 1974. Prentice, R. L. "Exponential survivals with censoring and explanatory variables. BIOMETRIKA 60, 1973, 279-288. Winer, B.J., STATISTICAL PRINCIPLES IN EXPERIMENTAL DESIGN, Second Edition, Mcgraw-Hill Book Company, 1971. Zar, J.H., BIOSTATISTICAL ANALYSIS, Prentice Hall. Inc, 1974. 26