The ____ is an index of the amount of variability in a set of data.

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Standard deviation is a statistical measure that shows the amount of variability or dispersion in a set of data. It measures how far the values are spread out from the average (mean) value. Statistical significance measures whether the results of an experiment are likely to have occurred by chance, central tendency measures the typical or central value of a data set, and correlation coefficient measures the strength and direction of the relationship between two variables.

The ____ Is an Index of the Amount of Variability