|
|
| File Information |
| Description |
Fisher's exact test of 2x3 contingency tables permits calculation of precise probabilities in situation where, as a consequence of small cell frequencies, the much more rapid normal approximation and chi-square calculations are liable to be inaccurate. The Fisher's exact test involves the computations of several factorials to obtain the probability of the observed and each of the more extreme tables. Factorials growth quickly, so it's necessary use logarithms of factorials. This computations is very easy in Matlab because x!=gamma(x+1) and log(x!)=gammaln(x+1). This
function is now fully vectorized to speed up the computation.
You can visit my homepage http://home.tele2.it/cardillo
My profile on XING http://www.xing.com/go/invita/13675097
My profile on LinkedIN http://it.linkedin.com/in/giuseppecardillo |
| MATLAB release |
MATLAB 7.3 (R2006b)
|
|
Tags for This File
|
| Everyone's Tags |
|
| Tags I've Applied |
|
| Add New Tags |
Please login to tag files.
|
| Comments and Ratings (3) |
| 07 May 2008 |
Shilpa Gandhi
|
|
|
| 06 Apr 2011 |
Mike
|
|
|
| 09 Dec 2011 |
Emmanuel
|
|
|
| Updates |
| 26 Jun 2007 |
Bug fixed in 1-tailed P calculation |
| 02 Jul 2007 |
More compact and vectorized function |
| 01 May 2008 |
waitbar added |
| 18 Jun 2008 |
Speeding up using gammaln function and vectorization. |
| 12 Nov 2008 |
Changes in help section |
| 25 Nov 2008 |
little improvements in tables enumeration |
| 23 Oct 2009 |
Actually, the function also computes the mid-P correction to make the test less conservative. |
| 23 Oct 2009 |
Actually, the function also computes the mid-P correction to make the test less conservative. |
| 23 Dec 2009 |
Changes in description |
|
Contact us at files@mathworks.com
