Statistical adjustments when comparing preexisting groups.

1969/11/01 by Frederic M. Lord · 2 citations
Decision Sciences · Business, Management and Accounting · #Forecasting Techniques and Applications #Big Data and Business Intelligence

paper · doi:10.1037/h0028108

openalex publication_date 1969/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23

Abstract

An illustration is given showing why the analysis of covariance usually does not provide the appropriate adjustment to compensate for preexisting differences between nonexperimental groups.

Citations

• A paradox in the interpretation of group comparisons.

Cited by

• Networks to Nowhere: Segregation and Stratification in Networks of Information about Schools
• Lord's paradox [wikipedia]