lognstat (Statistics Toolbox)

Mean and variance for the lognormal distribution.

Syntax

[M,V] = lognstat(MU,SIGMA)

Description

[M,V] = lognstat(MU,SIGMA) returns the mean and variance of the lognormal distribution with parameters MU and SIGMA. The size of M and V is the common size of MU and SIGMA if both are matrices. If either parameter is a scalar, the size of M and V is the size of the other parameter.

For the lognormal distribution, the mean is:

The variance is:

Example

[m,v]= lognstat(0,1)

m =

    1.6487

v =

    7.0212

Reference

Mood, A. M., F.A. Graybill, and D.C. Boes, Introduction to the Theory of Statistics, Third Edition, McGraw Hill 1974 p. 540-541.