Accession Number:

ADA058098

Title:

Statistical Analysis of One Hundred and Twelve Groups of Fatigue Performance Data: Testing the Homogeneity of the Samples.

Descriptive Note:

Final rept. 15 Jan-15 Feb 74,

Corporate Author:

AIR FORCE MATERIALS LAB WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

Report Date:

1978-04-01

Pagination or Media Count:

25.0

Abstract:

Three different tests for the hypothesis that the sample is homogeneous, denoted by MLE, OMLE and TI, are described, and their applications to 112 complete samples taken from an extensive list of fatigue performance data collected at the Boeing Company. The hypothesis of homogeneity was rejected for 60 of 112 examined samples by MLE, 45 of 107 samples by OMLE and 17 of 96 samples by TI. The number of samples for which the hypothesis was rejected at least by one of the tests was 64 to 112. The rejections are mainly due to high-time outliers, but in some cases to low-time outliers, which indicate two-component distributions. Author

Subject Categories:

  • Statistics and Probability
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE