Kurtosis Type

Gets the type of (excess) kurtosis

exkurtosisType(kurtosis)

Arguments

kurtosis

numeric.

Value

Returns one of 'platykurtic', 'mesokurtic' or 'leptokurtic'.

Details

Kurtosis is a measure of the tailedness of a distribution. Distributions can be compared to the Normal distribution by whether their kurtosis is higher, lower or the same as that of the Normal distribution.

A distribution with a negative excess kurtosis is called 'platykurtic', a distribution with a positive excess kurtosis is called 'leptokurtic' and a distribution with an excess kurtosis equal to zero is called 'mesokurtic'.

Examples

exkurtosisType(-1)
#> [1] "platykurtic"
exkurtosisType(0)
#> [1] "mesokurtic"
exkurtosisType(1)
#> [1] "leptokurtic"