Test whether there is significant difference between the frequency distributions for male and female
Research results suggest that IQ scores for boys are more variable after that IQ scores for girls. A typical study looking at 10-year-old children classifies participants by gender and by low, average, or high IQ. Following are hypothetical data representing the research results. Do data indicate a significant difference between the frequency distributions for male and females? Test at the .05 level of significance and describe the difference.
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IQ
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Low
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Average
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High
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Boys
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18
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42
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20
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80
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Girls
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12
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54
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14
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80
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n = 160
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