When testing the difference between two dependent population means, the test statistic is based on a ________.

When testing the difference between two dependent population means, the test statistic is based on a standard deviations of the differences.

The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed throughout a wider range, a low standard deviation suggests that the values tend to be close to the established mean.

The term “standard deviation” (or “”) refers to a measurement of the data’s dispersion from the mean. A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.

standard deviationsof the differences.standard deviationis a statistic that expresses how much variance or dispersion there is in a group of numbers. While a highstandard deviationsuggests that the values are dispersed throughout a wider range, a lowstandard deviationsuggests that the values tend to be close to the established mean.“standard deviation”(or “”) refers to a measurement of the data’s dispersion from the mean. A lowstandard deviationimplies that the data are grouped around the mean, whereas a largestandard deviationshows that the data are more dispersed.standard deviationhere