math

Returns the standard deviation of a list of numbers, or of each column in a table.

Signature

> math stddev {flags}

Flags

• --sample, -s: calculate sample standard deviation (i.e. using N-1 as the denominator)

Input/output types:

input	output
list<number>	number
record	record
table	record

Examples

Compute the standard deviation of a list of numbers

> [1 2 3 4 5] | math stddev
1.4142135623730951

Compute the sample standard deviation of a list of numbers

> [1 2 3 4 5] | math stddev --sample
1.5811388300841898

Compute the standard deviation of each column in a table

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