Which formula in psychometrics quantifies the principle of aggregation?
A) alpha
B) Spearman-Brown
C) kappa
D) Kaiser-Guttman

Name: Which formula in psychometrics quantifies the principle of aggregation? A) alpha B) Spearman-Brown C) kappa D) Kaiser-Guttman
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The Spearman-Brown formula is used to estimate the reliability of a test when the number of items is increased, reflecting the principle of aggregation by showing how reliability improves with more items.

Which Formula in Psychometrics Quantifies the Principle of Aggregation