A researcher wants to test the difference between average weights of a group of nursing home residents before and after a new food service program is put in place. Which statistical test should be used in this situation?

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A dependent samples t-test is used when the researcher want to compare the means of two related groups or paired measures such as pre- and post- scores. Chi-squared would be used to compare the frequency of a nominal-level variable. Repeated measures ANOVA would be used to compare three or more measures of the same dependent interval- or ratio-level dependent variable.

A Researcher Wants to Test the Difference Between Average Weights