kurtSamp 

Computes the sample kurtosis of a sequence.

It represents an unbiased estimate of the kurtosis of a random variable if passed values form its sample.

kurtSamp(expr)

Parameters

exprExpression returning a number.

Returned value

The kurtosis of the given distribution. Type — Float64. If n <= 1 (n is a size of the sample), then the function returns nan.

Example

SELECT kurtSamp(value) FROM series_with_value_column

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