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Procedure in Conducting the Present Investigation
Method of Finding Group Factors
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A. L. Rogers Algebraic Computation analysis of mathematical analyzing Arith arithmetical ability arithmetical group Average Correlation calculated Columbia University Correction for Attenuation Correlation of Average correlation of test criterion Cyril Burt eighteen tests finding group factors Formula 17 Formula 21 four abilities Four Reference Tests four tests g factor geometrical ability Geometrical Definitions group of tests High School Horace Mann School indicate Inference with Symbols investigation largest tetrad difference Matching Equations Matching Solids mathematical ability matical abilities mean correlation Memory mental metic Missing Steps Mixed Relations Narrative Completion Number Series test Orleans Arithmetic Reasoning overlapping partial correlations Plane Geometry test pool tests f probable error Prof pupils raw coefficients Reference Value method Saturation with g Schorling test Schorling-Clark-Potter Arithmetic test scores Spearman specific correlations specific factors statistical Steps in Series Superposition suspected tests test with g tests in pool tetrad equations Trabue Language Scales