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

A) statistical significance
B) central tendency
C) standard deviation
D) correlation coefficient

Standard Deviation

A statistical measure that quantifies the amount of variation or dispersion of a set of data values from their mean.

Variability

The extent to which data points in a statistical distribution or data set differ from each other and from the overall mean of the set.

Index

A statistical measure or indicator that represents the variation or level of a specific phenomenon, often used in economics and finance.