【VarianceP】
[code]Inputs: PriceValue(Numeric), Len(Numeric);Variables: var0(0), var1(0);
var0 = Len * Summation(Square(PriceValue), Len) - Square(Summation(PriceValue, Len));
var1 = Square(Len);
condition1 = Len > 1 OR Len < 0;
IF condition1 Then
VarianceP = var0 / var1;
[/code]
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