I either don't understand how this function works or there is a bug with it...

I enter the following X & y values with Sigma+

Y,X

36,6

25,5

81,9

100,10

With each entry the wp34s shows the number of entries as expected.

I do a __STAT__ BestF then I key h-6(L.R.) and the top area says Power. X register is -6.09818323034e-14 and y register is 2. So far so good.

Now I key in 4 and press f-6 for a predicted y but instead of 16 I get 8.

*Edited: 11 June 2011, 9:15 p.m. *