tracer says to #ysitd
a+d},0)};k.math.average=function(a){return k.math.sum.apply(null,arguments)/arguments.length};k.math.sampleVariance=function(a){var c=arguments.length;if(2>c)return 0;var d=k.math.average.apply(null,arguments);return c=k.math.sum.apply(null,k.array.map(arguments,function(a){return Math.pow(a-d,2)}))/(c-1)};k.math.standardDeviation=function(a){return Math.sqrt(k.math.sampleVariance.apply(null,arguments))};k.math.isInt=function(a){return