pooled_std¶

data_base.utils.pooled_std(m, s, n)¶

Calculates the pooled standard deviation out of samples.

Parameters:¶

m : array¶

means

s : array¶

unbiased standard deviation (normalized by N-1)

n : array¶

number of samples per group

Returns:¶

pooled mean and pooled standard deviation

Return type:¶

tuple