wp34s binomial bug Andrew Nikitin Member Posts: 117 Threads: 31 Joined: Sep 2008 09-22-2013, 01:11 PM 0.5 STO J 2 STO K 2 h PROB Binom Gives "Domain error" instead of 1. Binom_u also gives incorrect result. Dieter Senior Member Posts: 653 Threads: 26 Joined: Aug 2010 09-22-2013, 02:02 PM First of all: which firmware version do you refer to? I get the following results with v3.2 3405. Just to be sure: "Binom"  evaluates the lower CDF, i.e. the sum of all probabilities from k = 0...X "Binomu" evaluates the upper CDF, i.e. the sum of all probabilities from k = X...n "Binomp" evaluates the PDF, i.e. the single probability for k = X. All this works fine here: 0,5 STO J 2 STO K   0 Binomp => pdf(0) = 0,25 1 Binomp => pdf(1) = 0,5 2 Binomp => pdf(2) = 0,25   0 Binom => lower cdf(0) = 0,25 (= pdf(0)) 1 Binom => lower cdf(1) = 0,75 (= pdf(0) + pdf(1))  2 Binom => lower cdf(2) = 1 (= pdf(0) + pdf(1) + pdf(2))   0 Binomu => upper cdf(0) = 1 (= pdf(0) + pdf(1) + pdf(2)) 1 Binomu => upper cdf(1) = 0,75 (= pdf(1) + pdf(2)) 2 Binomu => upper cdf(2) = 0,25 (= pdf(2)) What do you get? Dieter Edited: 22 Sept 2013, 2:34 p.m. Miguel Toro Member Posts: 239 Threads: 55 Joined: Sep 2006 09-22-2013, 02:38 PM Hi, I also checked with mine: Version 3.2 3450 Results: 0 Binom => 0,25 1 Binom => 0,75 2 Binom => Domain Error Cheers, Miguel Andrew Nikitin Member Posts: 117 Threads: 31 Joined: Sep 2008 09-22-2013, 03:18 PM I discovered it on actual unit, which I do not have with me, but tried it with latest build in emulator (3450) before posting. I get Domain error on Binom(2) everything else works like your example. Paul Dale Posting Freak Posts: 3,229 Threads: 42 Joined: Jul 2006 09-22-2013, 05:20 PM Bug fixed. - Pauli « Next Oldest | Next Newest »

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