Question: A college statistics instructor wanted to compare student progress and retention according to the statistical program used in the introductory statistics class in which they

A college statistics instructor wanted to compare student progress and retention according to the statistical program used in the introductory statistics class in which they were enrolled. From local colleges he selected students in a course that used SPSS, MINITAB, and SAS. Here are the scores of the students in each class on a statistics computer skills assessment that he administered to randomly selected students from each class. Please calculate the means for each group.

SPSS: 17, 18, 24, 24, 19, 27, 30, 24

MINITAB: 21, 14, 19, 27, 14, 13, 20, 14

SAS: 14, 16, 16, 14, 20, 21, 16, 21

Analyze these results at the .05 level. If your results are significant, do an appropriate post hoc test. If the results are significant, answer the following question: given the method of selection, would there be any other plausible explanation for the differences in computer skills among the three groups in this study?

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