Concepedia
Journal of Educational Psychology · 1946 · 221 citations · 2 references
BusinessBusiness AnalyticsPredictive AnalyticsPsychometricsEfficiency AnalysisEfficiency MeasurementEfficiency ScoresPearson Correlation CoefficientRelative EfficiencyStatistical Efficiency
2
The Relation between the Difficulty and the Differential Validity of a Test
M. W. Richardson · Psychometrika · 1936 · 77 citations
Education, Educational Assessment, Educational Measurement +12
The Correlation Coefficient and its Prognostic Significance
Clark L. Hull · The Journal of Educational Research · 1927 · 10 citations
Social Sciences, Mathematics, Psychology +8