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

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)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA058098

Entities

People

  • Waloddi Weibull

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aeronautical Laboratories
  • Air Force
  • Air Force Facilities
  • Aluminum
  • Aluminum Alloys
  • Computer Programming
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Fuselages
  • Governments
  • Materials
  • Materials Laboratories
  • Order Statistics
  • Statistical Analysis
  • Statistics
  • Structural Components
  • Test And Evaluation

Readers

  • Aviation Science / Aeronautics.
  • Statistical inference.