And this happens every time you perform any action on a worksheet, for example update a formula (not necessarily the RAND formula, just any other formula on a sheet), edit a cell or enter new data. RAND() is a volatile function, meaning that a new random number is generated every time the worksheet is calculated. It returns a random decimal number (real number) between 0 and 1. The RAND function in Excel is one of the two functions specially designed for generating random numbers. Okay, this quite lengthy technical introduction ends and we are getting to practical and more useful things.Įxcel RAND function - generate random real numbers They offer free services to generate random numbers, games and lotteries, color codes, random names, passwords, alphanumeric strings, and other random data. If you are looking for true random data, you can probably use a third-party random number generator such as whose randomness comes from atmospheric noise. So, if someone still works with an old Excel version, you'd better not use the RAND function with large simulation models.
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