22. In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence scores for males than for females. Following are hypothetical data, similar to the results obtained in the study. Note that the scores are not regular IQ scores but have been standardized so that the entire sample has a mean of M = 10 and a standard deviation of s = 2. a. Calculate the mean and the standard deviation for the sample of n = 8 females and for the sample of 8 males. b. Based on the means and the standard deviations, deseribe the differences in intelligence scores for males and females. Female Male 9. 8. 10 10 11 13 12 10 11 14

22. In an extensive study involving thousands of British children, Arden and Plomin (2006) found significantly higher variance in the intelligence scores for males than for females. Following are hypothetical data, similar to the results obtained in the study. Note that the scores are not regular IQ scores but have been standardized so that the entire sample has a mean of M = 10 and a standard deviation of s = 2. a. Calculate the mean and the standard deviation for the sample of n = 8 females and for the sample of 8 males. b. Based on the means and the standard deviations, deseribe the differences in intelligence scores for males and females. Female Male 9. 8. 10 10 11 13 12 10 11 14

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22. In an extensive study involving thousands of
British children, Arden and Plomin (2006) found
significantly higher variance in the intelligence
scores for males than for females. Following are
hypothetical data, similar to the results obtained
in the study. Note that the scores are not regular
IQ scores but have been standardized so that
the entire sample has a mean of M 10 and
2.
a. Calculate the mean and the standard deviation for
the sample ofn 8 females and for the sample of
a standard deviation ofs =
8 males.
n =
b. Based on the means and the standard deviations.
describe the differences in intelligence scores for
males and females.
Female
Male
6.
11
10
13
12
14

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