mean
standard deviation
standard deviation
var y = stdev( 0.0, 1.0 );
// returns 1.0
var y = stdev( 5.0, 3.0 );
// returns 3.0
var y = stdev( NaN, 1.0 );
// returns NaN
var y = stdev( 0.0, NaN );
// returns NaN
var y = stdev( 0.0, 0.0 );
// returns NaN
Returns the standard deviation for a normal distribution with mean
mu
and standard deviationsigma
.Notes
sigma <= 0
, the function returnsNaN
.