WEIBULL function

Aplica-se a
SharePoint Server 2019 SharePoint Server 2016 SharePoint Server 2013 Standard SharePoint Server 2013 Enterprise SharePoint Foundation 2010 SharePoint Server 2010 Windows SharePoint Services 3.0

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

Syntax

WEIBULL(x,alpha,beta,cumulative)

X  is the value at which to evaluate the function.

Alpha  is a parameter to the distribution.

Beta  is a parameter to the distribution.

Cumulative  determines the form of the function.

Remarks

  • If x, alpha, or beta is nonnumeric, WEIBULL returns the #VALUE! error value.
  • If x < 0, WEIBULL returns the #NUM! error value.
  • If alpha ≤ 0 or if beta ≤ 0, WEIBULL 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 returns the exponential distribution with:
    Equation

Examples

X Alpha Beta Formula Description (Result)
105 20 100 =WEIBULL([X],[Alpha],[Beta],TRUE) Weibull cumulative distribution function for the specified arguments (0.929581)
105 20 100 =WEIBULL([X],[Alpha],[Beta],FALSE) Weibull probability density function for the specified arguments (0.035589)