Standard Deviation (SD or σ)
العودة الى قاموس المصطلحات

A measure of the dispersion (spread) of a data set. This SD is obtained by finding the square root of the variance of the dataset. The variance is the expected value (the average assuming an infinite number of values) of the squared deviation from the mean.

قاموس المصطلحات والتعريف قاموس المصطلحات