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Standard deviation
Definition
Standard deviation (SD) is a statistical method that measures how far values in a set of data deviate from the mean value. It is also known as root-mean-square deviation. The symbol for standard deviation is the Greek letter sigma (σ).
Definition and Description
Standard deviation is a statistical measure that quantifies the amount of variation or dispersion in a set of data points. It provides insight into how spread out or clustered the data values are around the mean (average) of the data set. In essence, standard deviation helps assess the degree of uncertainty or variability in the data. is also known as root-mean-square deviation. The symbol for standard deviation is the Greek letter sigma (σ).
