STDDEV.82P by Daniel Bishop, May 2000 (PUBLIC DOMAIN)

This program finds the variance and standard deviation of L1.  It uses the same algorithm as the variance() and stdDev() functions on the TI-83.  The variance calculated in this program is the sample variance based on n-1 degrees of freedom.  The standard deviation is found using the identity V=Sē.

Since this program is public domain, you may use its code in your programs.