Question: 27. Using the data in the Excel file Freshman College Data, use ANOVA to determine whether the mean retention rate is the same for all

27. Using the data in the Excel file Freshman College Data, use ANOVA to determine whether the mean retention rate is the same for all colleges over the 4‐year period.

Second, use ANOVA to determine if the mean ACT and SAT scores are the same each year over all colleges. If the null hypothesis is rejected, apply the Tukey–Kramer multiple comparison procedure to identify significant differences.

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