What is BETWEEN-GROUPS VARIANCE?

Written by Pam MS, NCSP | Fact checked by Psychology Dictionary staff 

n. in statistics, refers to the analysis of variance between two groups simultaneously undergoing testing. The variation shown in experimental scores reflects the degree by which their group means differ. Compare within-groups variance.

BETWEEN-GROUPS VARIANCE: "Exposure to a different set of experimental conditions will, indeed, result in a between-groups variance."

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