public virtual double LeftProbability(
	double x
)Public Overridable Function LeftProbability ( 
	x As Double
) As Doublepublic:
virtual double LeftProbability(
	double x
)abstract LeftProbability : 
        x : float -> float 
override LeftProbability : 
        x : float -> float The left probability function is commonly called the cumulative distribution function (CDF).
If you want a right-tailed value, you should use RightProbability(Double) instead.