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BritishGent BritishGent
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6 years ago
Advanced topic: Σ(X - GM)2
A) ignores the group a score is in.
B) is used to determine the grand mean.
C) is always smaller than Σ(X - M)2.
D) equals the sum of squared deviations of scores from their group's mean.
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Using the textbooks:

Statistics for Psychology, 5th Edition (Aron)
Measurement and Evaluation in Psychology and Education, 8th Edition (Thorndike)
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ErhardtErhardt
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