/// <summary>
/// Gets the variance as a sparse list.
/// </summary>
/// <returns>The variance of this distribution.</returns>
public ISparseList <double> GetVariance()
{
ISparseList <double> result = SparseList <double> .Constant(Count, CommonValue.GetVariance());
var sen = GetSparseEnumerator();
while (sen.MoveNext())
{
result[sen.CurrentIndex] = sen.Current.GetVariance();
}
return(result);
}
