Logncdf
Logncdf-func
Description
Computes the probabilities of the specified tail type tail in a given value x, associated with a Lognormal distribution using the corresponding parameters mu and sigma.
Syntax
double prob = logncdf(double x, double mu, double sigma[, int tail])
Parameters
x
- Input, the value of Lognormal variate
/math-41f29d3235e4f71169aa55c55dfb849c.png "x > 0")
mu
- Input, the mean of the associated Lognormal distribution .
sigma
- Input, the standard deviation of the associated Lognormal distribution,
/math-329d000ea66734c6e64e773857e1d634.png "sigma > 0")
tail
-
Input, Optional. The tail probability type using for the Lognormal distribution
- 1 = the for upper tail probability
- 2 = the lower tail probability (Default if not set)
- 3 = the two tail (significance level) probability
- 4 = the two tail (confidence interval) probability
prob
- Output, the returned probability.
Example
logncdf(150,2,0.2,3)=; // ANS: 3.2904785027465E-51