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Tony O'Hagan - First Bayes software


First Bayes


On this page you will find a brief description about First Bayes, links for downloading First Bayes and links to my other web pages.

Note: First Bayes is really old! Realistically, there is no prospect of it being updated by me, but it still works and does what it was originally intended to do.

News: A rewrite of First Bayes will soon (2022) be available. This is being written in Java and so will be highly portable and stable. It will also have new features. Watch this space!

About First Bayes

First Bayes is a teaching package for elementary Bayesian Statistics. It runs on IBM-PC compatibles under MS-Windows. N.B. First Bayes is intended as an aid to learning Bayesian Statistics, in conjunction with a course or suitable reading. It is not a self-contained course or tutor. I have also prepared a reading list on Bayesian Statistics.

First Bayes is offered free to anyone interested in teaching or learning Bayesian Statistics, provided it is not used for profit. It may be freely copied and distributed, provided that files have not been edited or altered in any way, and provided that no charge is made for distributing First Bayes. Requests to use First Bayes for any commercial purpose must be directed to me.

First Bayes is available in three forms. One is for Windows Vista, and I believe this can be easily installed to run under any more recent version of Windows, including Windows 10. The second is for the old Windows 95, NT, 98, 2000 and XP, and the third for the even older Windows 3.1 or 3.11 (in case anyone is still using those). My thanks to Alan Paget for pointing out that First Bayes will also run under linux with the wine software (so it may also be possible to run it under Solaris and Mac OS), and to Dries Benoit for providing a detailed installation guide.

See the technical page for more details on requirements and features.


To get First Bayes

Click for the

This will download the compressed file 1b.zip containing the entire First Bayes package. You should uncompress this zip archive into a suitable directory (e.g. c:/firstbayes) using any unzip utility (e.g. WinZip). All other installation instructions are in the manual, which is included in the 1b.zip package.

Please be sure to follow the installation instructions carefully. The technical problems that are reported to me are almost always due to mistakes in following the installation instructions. However, some users have reported that on starting First Bayes they receive an error message "Stream 0: .\apl_uk.din line : 435 invalid syntax". The solution to this problem is to delete both the files apl_uk.din and win.dot from the First Bayes directory.

The manual for the Windows 95/NT/98/2000/XP and Vista versions is the Word file 1b.doc. (In case you do not have Word you can download a free Word viewer.) The Windows 3.1/3.11 version provides the manual as a file 1b.wri which can be viewed or printed from the Windows Write program included with those operating systems.


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Last updated: 22 February 2022
Maintained by: Tony O'Hagan