On Mon, 2007-09-07 at 10:39 -0400, Tom Lane wrote:
> When applied to "numeric" input, stddev_pop produces the same result as
> stddev_samp, and var_pop produces the same result as var_samp. This
> is because whoever wrote numeric_stddev_internal() forgot that the
> divisor is different for the sam
When applied to "numeric" input, stddev_pop produces the same result as
stddev_samp, and var_pop produces the same result as var_samp. This
is because whoever wrote numeric_stddev_internal() forgot that the
divisor is different for the sample case. This mistake is in fact
visible in the regressio
