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Degrees of Freedom
The quantity of variable values available in the concluding computation of a statistic.
Variability
A measure of the dispersion or spread of data points in a dataset, showing how much the data points differ from each other.
Sample Standard Deviations
A measure that quantifies the amount of variation or dispersion of a set of sample data values from the mean.
Test Statistic
A calculated value from sample data that is used in a hypothesis test to determine whether to reject the null hypothesis, based on some statistical model.
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