4. Covariation

  1. Gerald van Belle

Published Online: 26 SEP 2008

DOI: 10.1002/9780470377963.ch4

Statistical Rules of Thumb, Second Edition

Statistical Rules of Thumb, Second Edition

How to Cite

van Belle, G. (2008) Covariation, in Statistical Rules of Thumb, Second Edition, John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470377963.ch4

Author Information

  1. University of Washington, Department of Biostatistics and Department of Environmental and Occupational Health Sciences, Seattle, WA

Publication History

  1. Published Online: 26 SEP 2008
  2. Published Print: 18 AUG 2008

ISBN Information

Print ISBN: 9780470144480

Online ISBN: 9780470377963



  • covariation;
  • correlation;
  • regression sampling;
  • pairing data;
  • accuracy


This chapter contains sections titled:

  • Assessing and Describing Covariation

  • Don't Summarize Regression Sampling Schemes with Correlation

  • Do Not Correlate Rates or Ratios Indiscriminately

  • Determining Sample Size to Estimate a Correlation

  • Pairing Data is Not Always Good

  • Go Beyond Correlation in Drawing Conclusions

  • Assess Agreement in Terms of Accuracy, Scale Differential, and Precision

  • Assess Test Reliability by Means of Agreement

  • The Range of the Predictor Variable Determines the Precision of Regression

  • In Measuring Change, Width is More Important than Number of Observations