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For cases where some assumptions are not met, a nonparametric alternative may be considered.

Common statistical tools for assessing these comparisons are t-tests, analysis-of-variance, and general linear models.

Multivariate Analysis of Variance (MANOVA)Ī common problem that arises in research is the comparison of the central tendency of one group to a value, or to another group or groups.

To see how these tools can benefit you, we recommend you download and install the free trial of NCSS. Use the links below to jump to the comparison of means topic you would like to examine.

The group of tools for comparison of means constitute a very large portion of the common statistical tasks required in research. NCSS Statistical Software contains a variety of tools for tackling these tasks that are easy-to-use and carefully validated for accuracy.