statsitics

Exercise 261. Plot the frequency distribution for “Age at Enrollment” by hand or by usin” rel=”nofollow”>ing SPSS.

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2. How would you characterize the skewness of the distribution in” rel=”nofollow”>in Question 1—positively skewed, negatively skewed, or approximately normal? Provide a rationale for your answer.

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3. Compare the origin” rel=”nofollow”>inal skewness statistic and Shapiro-Wilk statistic with those of the smaller dataset ( n = 15) for the variable “Age at First Arrest.” How did the statistics change, and how would you explain” rel=”nofollow”>in these differences?

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4. Plot the frequency distribution for “Years of Education” by hand or by usin” rel=”nofollow”>ing SPSS.
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5. How would you characterize the kurtosis of the distribution in” rel=”nofollow”>in Question 4—leptokurtic, mesokurtic, or platykurtic? Provide a rationale for your answer.

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6. What is the skewness statistic for “Age at Enrollment”? How would you characterize the magnitude of the skewness statistic for “Age at Enrollment”?

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7. What is the kurtosis statistic for “Years of Education”? How would you characterize the magnitude of the kurtosis statistic for “Years of Education”?

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8. Usin” rel=”nofollow”>ing SPSS, compute the Shapiro-Wilk statistic for “Number of Times Fired from Job.” What would you conclude from the results?

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9. In the SPSS output table titled “Tests of Normality,” the Shapiro-Wilk statistic is reported along with the Kolmogorov-Smirnov statistic. Why is the Kolmogorov-Smirnov statistic in” rel=”nofollow”>inappropriate to report for these example data?

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10. How would you explain” rel=”nofollow”>in the skewness statistic for a particular frequency distribution bein” rel=”nofollow”>ing low and the Shapiro-Wilk statistic still bein” rel=”nofollow”>ing signi?cant at p < 0.05?

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