Symmetric

Definition

In statistics, symmetry refers to when two halves (or sides) of something are mirror images or nearly identical. In relation to histograms, symmetry suggests that the distribution on one side is similar or equal to the distribution on the other side.

Related terms

Skewness: Skewness measures the asymmetry (lack of symmetry) in a statistical distribution. Positive skewness indicates that there is more mass towards lower values, while negative skewness indicates more mass towards higher values.

Mean: Mean is the average value obtained by summing up all values and dividing by the total count. In symmetric distributions, mean equals median (the middle value).

Median: Median represents the central value in an ordered set of data points. In symmetric distributions, median equals mean.