## Function Gaussian-Significance

(

**gaussian-significance** < x > < tails > &optional < mean > < sd > )

Computes the significance of ` x' in a Gaussian distribution with mean=`

mean'

(default 0.0) and standard deviation=` sd' (default 1.0); that is, it returns<br> the area which farther from the mean than `

x' is.

The null hypothesis is roughly that ` x' is zero; you must specify your<br> alternative hypothesis (H1) via the `

tails' parameter, which must be :both,

:positive or :negative. The first corresponds to a two-tailed test: H1 is that

` x' is not zero, but you are not specifying a direction. If the parameter is<br> :positive, H1 is that `

x' is positive, and similarly for :negative.