What is WEIBULL.DIST function in Excel? WEIBULL.DIST function is one of Statistical functions in Microsoft Excel that returns the Weibull distribution. Use this distribution in reliability analysis, such as calculating a device’s mean time to failure. Syntax of  WEIBULL.DIST function 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     […]