Added a routine to calculate a chi squared test statistic for a two way table.
Removed an array that was used for testing purposes.
Removed another array that was used for testing purposes.
Added a first draft of a subroutine to calc. the stats for a t test.
Added the value of the p-value for the t-test.
Added comments to the t-dist routine.
Added a routine to calculate the Pearson's sample correlation.