Documentation/Calc Functions/SKEWP

Function name:
SKEWP

Category:
Statistical Analysis

Summary:
Calculates the skewness of distribution using the population, i.e. the possible outcomes, of a random variable. Skewness is a measure of the asymmetry of a distribution about its mean.

Syntax:
SKEWP(Number 1 [; Number 2 [; … [; Number 255]]])

Returns:
Returns a real number which is the skewness of the distribution using a population of random variables of a specified sample of numbers.

Arguments:
Number 1, Number 2, ..., Number 255 are numbers, references to cells or to cell ranges of numbers.


 * The parameters should specify at least three values. However, the function returns 0 for only three values.
 * If there are less than three values, then the function will return a division (#DIV/0!) error.
 * If any of the arguments contain text value either being passed directly then the function returns a name (#NAME?) error and if with double quotes then the function returns an error value (Err:504).
 * If a cell contains text, error value, or empty cells, then the function ignores these values. However, for logical values TRUE is considered as 1 and FALSE as 0.
 * If a cell contains 0 then the function includes it.

Additional details:

 * Unlike SKEW, SKEWP uses the standard deviation of the entire population rather than an individual sample.
 * The formula for SKEWP is:

where N is the count of data points, x̄ is the expectation value (mean of the specified set of numbers) and s is the standard deviation estimate (standard deviation of the specified set of numbers).


 * For more details on skewness, visit Wikipedia.

Related LibreOffice functions:
[[Special:MyLanguage/Documentation/Calc_Functions/SKEW SKEW]

ODF standard:
Section 6.18.68, part 2

Equivalent Excel functions:
SKEW.P