public Variance(double[] x, MAType type = MAType.SMA, int period = 14)
{
MovingAverage xAvg = type.GetMovingAverageFromArray(x);
double sum = 0;
int n = xAvg.Count;
int m = x.Length - n;
for (int i = 0; i < n; i++)
{
sum = sum + (x[i + m] - xAvg.MA[i]).Squared();
}
this.value = sum / n;
}
