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# Statistic sign test & Wilcoxon signed-rank test

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Use the following data set for parts A& B

Treatment Group 1 Treatment Group 2
97 96
88 86
75 79
90 89
85 91
94 89
77 86
89 99
82 94
90 96

A. Perform the sign test to analyze the difference in the matched pairs. It is not important what the numbers mean.

B. Perform the Wilcoxon signed-rank test on the same data.

For C & D, use the following independent data:
Group A (n=16): 92, 74, 35, 90, 61, 45, 71, 67, 54, 72, 73, 44, 77, 54, 63, 62
Group B (n=20): 49, 40, 32, 54, 36, 26, 47, 14, 71, 88, 58, 35, 58, 36, 51, 53, 22, 51, 20, 38

C. Perform the Wilcoxon rank-sum test on the independent data.

D. Calculate the mean and standard deviation of each group in the independent data. Test the null hypothesis that the means of the two groups are equal.

##### Solution Summary

The solution is provided in an Excel attachment, completed step-by-step with short explanations.

##### Measures of Central Tendency

Tests knowledge of the three main measures of central tendency, including some simple calculation questions.

##### Terms and Definitions for Statistics

This quiz covers basic terms and definitions of statistics.

##### Measures of Central Tendency

This quiz evaluates the students understanding of the measures of central tendency seen in statistics. This quiz is specifically designed to incorporate the measures of central tendency as they relate to psychological research.