standardDeviation

standardDeviation(x): number

Defined in: src/standard_deviation.js:19

The standard deviation is the square root of the variance. This is also known as the population standard deviation. It’s useful for measuring the amount of variation or dispersion in a set of values.

Standard deviation is only appropriate for full-population knowledge: for samples of a population, sampleStandardDeviation is more appropriate.

Parameters

x

number[]

input

Returns

number

standard deviation

Example

variance([2, 4, 4, 4, 5, 5, 7, 9]); // => 4
standardDeviation([2, 4, 4, 4, 5, 5, 7, 9]); // => 2