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-
- THE LONGLEY DATA
-
- The following data are a scaled version of a widely used
- test for regression programs. These data are for the U.S.
- between 1947 and 1962 and are highly inter-correlated. They
- were used to form an employment prediction equation.
-
- X1 X2 X3 X4 X5 X6 Y
-
- 83.0 234.289 235.6 159.0 107.608 1947 60.323
- 88.5 259.426 232.5 145.6 108.632 1948 61.122
- 88.2 258.054 368.2 161.6 109.773 1949 60.171
- 89.5 284.599 335.1 165.0 110.929 1950 61.187
- 96.2 328.975 209.9 309.9 112.075 1951 63.221
- 98.1 346.999 193.2 359.4 113.270 1952 63.639
- 99.0 365.385 187.0 354.7 115.094 1953 64.989
- 100.0 363.112 357.8 335.0 116.219 1954 63.761
- 101.2 397.469 290.4 304.8 117.388 1955 66.019
- 104.6 419.180 282.2 285.7 118.734 1956 67.857
- 108.4 442.769 293.6 279.8 120.445 1957 68.169
- 110.8 444.546 468.1 263.7 121.950 1958 66.513
- 112.6 482.704 381.3 255.2 123.366 1959 68.655
- 114.2 502.601 393.1 251.4 125.368 1960 69.564
- 115.7 518.173 480.6 257.2 127.852 1961 69.331
- 116.9 554.894 400.7 282.7 130.081 1962 70.551
-
-
- Y = Employment
- X1 = Gross National Product Deflator
- X2 = Gross National Product
- X3 = Unemployment
- X4 = Size of Armed Forces
- X5 = Total Population
- X6 = Year
-
- CORRELATION MATRIX
-
- X1 X2 X3 X4 X5 X6 Y
-
- X1 1.0 .9916 .6206 .4660 .9792 .9912 .9709
- X2 1.0 .6043 .4478 .9911 .9953 .9836
- X3 1.0 -.1786 .6866 .6683 .5025
- X4 1.0 .3655 .4183 .4591
- X5 1.0 .9940 .9604
- X6 1.0 .9713
-
-
- REGRESSION COEFFICIENTS
-
- X1 X2 X3 X4 X5 X6 Constant
-
- Longley .0150619 -.035819 -.020202 -.010332 -.051104 1.829151 -3482.259
-
- SAS .0150602 -.035819 -.020202 -.010332 -.051104 1.829151 -3482.259
- digits of
- accuracy 5 5 5 5 5 7 7
-
- ratio 1.000113 1.000006 1.000015 1.000029 1.000002 1.000000 1.000000
- Longley to
- SAS
-
-
- Additional tests and some benchmarks of stat programs
- running on the Apple are in: Lachenbruch, Peter A.,
- Statistical Programs for Microcomputers, BYTE, Nov. 1983,
- pp. 560-570
-
-
- the Apple are in: Lachenbruch, Peter A.,
- Stat