Normal Dist for 2 variable statistics on WP 34S

[lrdheat]

It is not difficult to call up X-bar, swap X and y, store result in j, call up standard dev s, swap X and y, store result in k, and then do the calculation (.61 comes up correctly). I was wondering if I could simply switch the X and y summations themselves, avoiding the manual entering of y-bar and y standard deviation...