WEIBULL


Description Computes the Weibull distribution.

Syntax WEIBULL (x, alpha, beta, cumulative)
Argument Description
x The value at which the function will be evaluated. It must be larger than or equal to 0.
alpha The alpha parameter to the distribution. It must be larger than 0.
beta The beta parameter to the distribution. It must be larger than 0.
cumulative Enter TRUE to calculate the cumulative area from 0 to x and FALSE to calculate the value.

Equations For the cumulative distribution:

For the probability density function:

If alpha = 1, WEIBULL returns the exponential distribution with .

Examples This function returns 0.439:

WEIBULL(100,3,120,TRUE)

This function returns 0.010:

WEIBULL(100,3,120,FALSE)

See Also BINOMDIST, BETADIST, CHIDIST, COMBIN, CRITBINOM, EXPONDIST, FDIST, GAMMADIST, NORMDIST, POISSON