math variance for math

Signature

> math variance {flags}

Flags

• --sample, -s: Calculate sample variance (i.e. using N-1 as the denominator).

Input/output types:

Examples

Get the variance of a list of numbers.

> [1 2 3 4 5] | math variance
2.0

Get the sample variance of a list of numbers.

> [1 2 3 4 5] | math variance --sample
2.5

Compute the variance of each column in a table.

> [[a b]; [1 2] [3 4]] | math variance
╭───┬───╮
│ a │ 1 │
│ b │ 1 │
╰───┴───╯