[WP-34S] Chi-Square Distribution

[walter b]

(01-12-2014 03:13 PM)Sanjeev Visvanatha Wrote:  

(01-11-2014 03:02 PM)walter b Wrote:  5.4068 is correct for 0.1%, while 43.8202 is correct for 99.9% Integrating form zero to p, the value returned must increase for growing p (see pp. 54f of the manual quoted). The HP-21S calculates with the error probability instead.

Thank you for clarifying my misunderstanding. I wonder if you consider the statement on pg. 126 of the WP-34S manual correct then? :

"... ϰ²INV equals ϰ²p in the HP-21S ..."

I replaced it by "... χ²INV corresponds to χ²p in the HP-21S ..." and put an extra footnote on p. 55 stating:

The HP-21S returns Q instead of P. Thus, also the inverse works differently there.

Also modified the respective IOP entries for F, t, and Φ this afternoon. Thank you for your head up. Anyway, however, those modifications will show up no earlier than with the second (revised) edition of the printed manual. Please be patient.

d:-)