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Topic: Help with probability&stat problem
Replies: 47   Last Post: Jun 16, 2007 4:32 AM

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Jack Tomsky

Posts: 1,835
Registered: 12/18/04
Re: Help with probability&stat problem
Posted: Jun 14, 2007 2:21 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

> The BASIC program I made, listing presented at this
> thread, provides INSTANTANEOUSLY the cumulative
> probability even if I enter X=110 (N=110, p=0.2). I
> wonder why to prefer the extremely slow .EXEL?.
> TWENTY SECONDS when X=30? WHAT AN ETERNITY!!!
> *********
> IMPROOVED PROGRAM
>
> This program (listing below) is able to evaluate the
> cumulative probabilities of Bin (p=0.000001,
> N=10^6).It spends 10 seconds (circa) to evaluate
> F(X=10^6) providing the value 1.0000000000D+000.
>
> Licas
>
>
> REM "BINcum"
> CLS
> DEFDBL A-Z
> PRINT " F(a) = p(X<=a) X=Bin(p, N) "
> INPUT " p , N "; p, n
> INPUT " a ( a<=n ) "; a
> w = p / (1 - p)
> ante = (1 - p) ^ n: s = ante
> IF s = 0 THEN GOTO 20
> IF a = 0 THEN GOTO 10
> FOR j = 0 TO n - 1
> IF j > a - 1 THEN GOTO 10
> post = ante * (n - j) / (j + 1) * w
> s = s + post
> ante = post
> NEXT j
> 10 LOCATE 10, 50
> : PRINT USING "##.##########^^^^^"; s
> END
> 20 PRINT " p(0)=0 "



I can do the calculation in zero seconds, which is much faster than your program. For any Bin(N,p), Prob(X <= N) = 1.

Jack


Date Subject Author
6/11/07
Read Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
briggs@encompasserve.org
6/11/07
Read Re: Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
Randy Poe
6/11/07
Read Re: Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
Bruce Weaver
6/11/07
Read Re: Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
Bruce Weaver
6/11/07
Read Re: Help with probability&stat problem
C6L1V@shaw.ca
6/11/07
Read Re: Help with probability&stat problem
Randy Poe
6/11/07
Read Re: Help with probability&stat problem
tutorny
6/11/07
Read Re: Help with probability&stat problem
Nick
6/11/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/11/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/11/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/11/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/11/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/12/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/12/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/12/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/12/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/12/07
Read Binomial law DF: a simple program
Luis A. Afonso
6/13/07
Read Re: Binomial law DF: a simple program
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Anon.
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Anon.
6/13/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Anon.
6/13/07
Read FALSIFICATION
Luis A. Afonso
6/13/07
Read Re: FALSIFICATION
Jack Tomsky
6/13/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/13/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/14/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/14/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/14/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/14/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/15/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/15/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/15/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/15/07
Read Re: Help with probability&stat problem
Jack Tomsky
6/15/07
Read Re: Help with probability&stat problem
Luis A. Afonso
6/16/07
Read Re: Help with probability&stat problem
Luis A. Afonso

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