What is standard deviation?
A value that describes how the data deviates from the mean
Standard deviation is a statistical measure that calculates the amount of variation or dispersion of a set of data values from the mean or average. In other words, it is a measure of the amount of spread or variability within a data set.
The standard deviation is always non-negative and its value depends on how the data values are spread around the mean. A small standard deviation indicates that the data values are closely clustered around the mean, whereas a large standard deviation indicates that the data values are more spread out.
Standard deviation is a widely used measure in various fields including finance, engineering, and social sciences to describe the risk and uncertainty associated with a set of data values.
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