A statistic that measures how two variables tend to move together is the

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The correlation coefficient measures the strength and direction of the linear relationship between two variables. It ranges from -1 to 1, with positive values indicating a positive relationship, negative values indicating a negative relationship, and values close to 0 indicating a weak or nonexistent relationship. The coefficient of variation measures the relative variability of a dataset, while the standard deviation and variance measure the spread or dispersion of data around the mean. The mean is simply the average value of a dataset. None of these measures specifically capture the relationship between two variables.

A Statistic That Measures How Two Variables Tend to Move