An Anomaly in the Pearson Product-Moment Correlation Coefficient.

Abstract

An anomalous condition in the use of the Pearson product-moment correlation coefficient is reported in which decreasing variance of one or both variables is associated with increased absolute value of the coefficient, contrary to popular expectation. The reasons for this are discussed, along with a recommendation for a change in the method of presenting restriction-of-range phenomena in statistical instruction. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1978
Accession Number
ADA084354

Entities

People

  • Robert C. Haygood
  • Vernon S. Gerlach

Organizations

  • Arizona State University

Tags

DTIC Thesaurus Topics

  • Air Force
  • Coefficients
  • Education
  • Flight Training
  • Governments
  • Measurement
  • New York
  • Scientific Research
  • Standards
  • Students
  • Training
  • United States
  • United States Government
  • Universities

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  • Neural Network Machine Learning.
  • Psychometric Testing or Psychological Assessment.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.