Definition

Returns the Weibull distribution. Use this distribution in reliability analysis, such as calculating a device's mean time to failure.

Sample Usage

Syntax
WEIBULL.DIST(x,alpha,beta,cumulative)
The WEIBULL.DIST function syntax has the following arguments:
  • X     Required. The value at which to evaluate the function.
  • Alpha     Required. A parameter to the distribution.
  • Beta     Required. A parameter to the distribution.
  • Cumulative     Required. Determines the form of the function.
Remarks
  • If x, alpha, or beta is nonnumeric, WEIBULL.DIST returns the #VALUE! error value.
  • If x < 0, WEIBULL.DIST returns the #NUM! error value.
  • If alpha ≤ 0 or if beta ≤ 0, WEIBULL.DIST returns the #NUM! error value.
  • The equation for the Weibull cumulative distribution function is:
    Equation
  • The equation for the Weibull probability density function is:
    Equation
  • When alpha = 1, WEIBULL.DIST returns the exponential distribution with:
    Equation
In order to use the WEIBULL.DIST formula, start with your edited Excellentable
Then type in the WEIBULL.DIST formula in the area you would like to display the outcome:
By adding the values you would like to calculate the WEIBULL.DIST formula for, Excellentable will generate the outcome:



  
    
      



    

        
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