Accurate Normal Distribution for the HP67/97

[Dieter]

(04-22-2018 09:27 AM)Mike (Stgt) Wrote:  After a while it displays 0.000025067 what is about 10 times more than your result. My assumption, there is a 0 missing in the entry, it should be 0.500001

Yes, of course there was a 0 missing in the input. Or one too much in the output. ;-)
Very close to zero the quantile is approx. sqrt(2·pi) · (p–0,5).

I have corrected the original post.

BTW, with the adjusted coefficient set you should get 0,000025066 for p=0,50001, which is even more accurate.

Dieter