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Portable Network Graphic  |  1994-04-29  |  56KB  |  816x1056  |  8-bit (256 colors)
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OCR: Periodograms Periodograms can be used to look for cyclical patterns, freauencies or periodicities in data. For this kind of analy 'sis, data IS decom iposed into a sum of sine and cosine waves of different amplitudes and wavelengths. The coefficient: the sine and cosine are used with the data to construct a value, called periodog similar to sum of squares in an analysis of variance sense The Sav Periodogram option in the Control Charts ($ dndod menu generates JMP data table with columns for period freguency sine and cosine coefficients periodogram, and smoothed periodogram plot of periodogram by frequency plot of periodogram by period (or wavelength window that shows statistical tests for whether or not the data are white noi: click on any item for more help decomposed Save Contro popup pe ...