WEIBULL.DIST Function Explained

The WEIBULL.DIST Function in Microsoft Excel calculates the Weibull probability density function or the cumulative distribution function for a supplied set of parameters. It takes three arguments: x, alpha, and beta. x is the value at which to evaluate the function, alpha is the shape parameter, and beta is the scale parameter. The function returns the probability that a variate will assume a value less than or equal to x.

WEIBULL.DIST Function Syntax

WEIBULL.DIST(x,alpha,beta,cumulative)

  • x: The value at which you want to evaluate the distribution.
  • alpha: The shape parameter of the Weibull distribution.
  • beta: The scale parameter of the Weibull distribution.
  • cumulative: A logical value that determines the form of the function. If cumulative is TRUE, WEIBULL.DIST returns the cumulative distribution function; if FALSE, it returns the probability density function.