skewSamp
Computes the sample skewness of a sequence.
It represents an unbiased estimate of the skewness of a random variable if passed values form its sample.
skewSamp(expr)
Parameters
expr
— Expression returning a number.
Returned value
The skewness of the given distribution. Type — Float64. If n <= 1
(n
is the size of the sample), then the function returns nan
.
Example
SELECT skewSamp(value) FROM series_with_value_column
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