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Results in an investigation of sex differences

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Reference no: EM132157561

1. Imagine you obtained the following results in an investigation of sex differences among high school students:

Mathematics Achievement

Verbal Ability

Male (n = 32) Female (n = 34)

M = 48 S = 9.0 (male) M = 46 S =9.2 (female)

Male (n = 32) Female (n = 34)

M = 75 S = 12.9 (male) M = 78 S =13.2 (female)

(a) What is the pooled standard deviation for mathematics achievement?

(b) What is the pooled standard deviation for verbal ability?

(c)  Calculate the effect size for each of these mean differences.

(d) What is your impression of the magnitude of the two effect sizes?

NB: Effect Size (ES) = M1- M2 / (SS1 + SS2 / n1 + n2)1/2 = M1 - M2 / Spooled

Reference no: EM132157561

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