Use the link that KSharp provides.  Also, you don't need to simulate a normal variate by using the sum of six uniform variates. SAS provides the RAND("Normal") function for generating a random variate from the standard normal distribution. If you want a nonstandard distribution, include the mean and stddev as additional arguments, like this:   x = rand("Normal", 10, 2); /* population mean=10; popul stddev=2 */ ... View more