You Calculate a Sample Mean for Three Different Groups

question 14

Multiple Choice

You calculate a sample mean for three different groups. The accuracy of the average of the sample means is reflected by which of the following?

• A) Standard error
• B) Variance
• C) Standard error of the mean
• D) Degrees of freedom

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Definitions:

Sign Test

A nonparametric test used to determine if there is a median difference between two paired samples.

Matched Pairs

An experimental design technique where each treatment is given to two subjects that are as closely matched as possible, or to the same subject under different conditions.

P-value

The p-value is a statistical measure indicating the probability of observing test results at least as extreme as those observed, assuming the null hypothesis is true.

Consecutive Weeks

A series of weeks that follow one after another without interruption, often used in the context of scheduling or data collection.