Accession Number:

AD0621906

Title:

TESTS FOR RANDOMNESS, STATIONARITY, NORMALITY AND COMPARISON OF SPECTRA.

Descriptive Note:

Final rept. for Feb 64-Apr 65,

Corporate Author:

MEASUREMENT ANALYSIS CORP LOS ANGELES CALIF

Report Date:

1965-08-01

Pagination or Media Count:

54.0

Abstract:

This report contains material for carrying out certain practical tests for randomness, stationarity, and normality of physical data, as well as details on how to test for equivalence of two power spectral density functions. The tests for randomness are qualitative inspections of measured properties from sample records, such as power spectra, probability density, auto-correlation functions, which may be part of a regular data reduction procedure. The tests for stationarity are nonparametric statistical procedures, based upon Run and Trend Distributions, which require simple quantitative calculations for acceptance or rejection. The test for normality is a statistical hypothesis test based upon sample measurements of the amplitude probability density function at seven equispaced amplitude levels from zero to plus and minus three sigma. To test for equivalence of two spectra, a straight-forward procedure is recommended which requires knowledge only of the number of degrees-of-freedom associated with the spectral estimates, and the full bandwidth occupied by the data. A special case of this procedure is to compare an unknown spectrum to a white spectrum. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE