What statistical measure describes the spread of data around the mean?

The statistical measure that describes the spread of data around the mean is the standard deviation. The mean is the average value of a dataset. Standard deviation quantifies the amount of variation or dispersion of a set of data values. A low standard deviation indicates that the data points tend to be close to the mean, while a high standard deviation indicates that the data points are spread out over a wider range. Other measures, like variance, also describe spread, but standard deviation is in the same units as the original data, making it easier to interpret.