Math Solutions

[Step-by-Step] Research results suggest, that IQ scores for boys are more variable than IQ scores for girls (Arden Plomin, 2006). A typical study looking at

Question: Research results suggest, that IQ scores for boys are more variable than IQ scores for girls (Arden & Plomin, 2006). A typical study looking at 10-year-old children classifies participants by gender and by low, average, of high IQ. Following are hypothetical data representing the research results. Do the data indicate a significant difference between the frequency distributions for males and females? Test at the .05 level of significance and describe the difference.

Low Average High
Boys 18 42 20
Girls 12 54 14

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