Aplia, 1 term Printed Access Card for Gravetter/Wallnau's Essentials of Statistics for the Behavioral Sciences, 8th
8th Edition
ISBN: 9781285079707
Author: Frederick J Gravetter, Larry B. Wallnau
Publisher: Cengage Learning
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Textbook Question
Chapter 4, Problem 22P
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 n = 8 males.
- b. Based on the means and the standard deviations, describe the differences in intelligence scores for males and females.
| Female | Male |
| 9 | 8 |
| 11 | 10 |
| 10 | 11 |
| 13 | 12 |
| 8 | 6 |
| 9 | 10 |
| 11 | 14 |
| 9 | 9 |
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Chapter 4 Solutions
Aplia, 1 term Printed Access Card for Gravetter/Wallnau's Essentials of Statistics for the Behavioral Sciences, 8th
Ch. 4.3 - Brief explain what is measured by the standard...Ch. 4.3 - The deviation scores are calculated for each...Ch. 4.3 - What is the standard deviation for the following...Ch. 4.3 - Calculate the variance for the following...Ch. 4.3 - Find the sum of the squared deviations, SS, for...Ch. 4.3 - a. Sketch a histogram showing the frequency...Ch. 4.4 - a. Sketch a histogram showing the frequency...Ch. 4.4 - For the following set of scores: 1, 5, 7, 3, 4 a....Ch. 4.4 - Prob. 3LCCh. 4.5 - Explain the difference between a biased and an...
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