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Rand Function Examples. In the following spreadsheet, the Excel Rand function is used to generate random numbers between different limits. Note that the above formulas will return a different random number every time the spreadsheet recalculates. To force a recalculation at any time, press the F9 key. For further details of the Excel Rand Function, see the Microsoft Office website.
where F -1 (u) is the inverse cumulative distribution function (ICDF) of the same distribution, and x is the resulting random number. To implement this method in Excel, you can use the RAND function to generate random numbers from the Uniform distribution, and apply the built-in functions to calculate the ICDF.n theory, the inverse transform method is very easy to use: to generate a random number from any probability distribution with cumulative distribution function F(x), you need to take the following steps: 1  generate a random number from the Uniform distribution: u=Uniform(0,1), and. 2  calculate x=F -1 (u),