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From: sandee@Think.COM (Daan Sandee)
Subject: Re: Results of my test: Re: Friday 13th, try it yourself
Date: 1996/09/26
Message-ID: <52ej16$ite@bone.think.com>#1/1
X-Deja-AN: 185515086
references: <5bxuvOAdKcSyEwne@merlyn.demon.co.uk>
 <Pine.SOL.3.91.960926130011.17641E-100000@serv1.jump.net>
organization: TMC
newsgroups: 
 comp.lang.ada,comp.lang.apl,comp.lang.basic,comp.lang.c,comp.lang.fortran,comp.lang.perl.misc,comp.lang.pascal.misc,comp.lang.smalltalk
Date: 1996-09-26T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <Pine.SOL.3.91.960926130011.17641E-100000@serv1.jump.net>, Lee Crites <adonai@jump.net> writes:

[repeats attempts already made by others and posted here ad nauseam]

|> However, the results are no different.  Basically, the 13th falls 
|> uniformily across each day of the week.

As your table shows, the 13th is a Friday more often that any other day
of the week.  Which was the original claim.  The claim was not "much
more often".  The numbers you have calculated are exact and repeatable
(others have produced them with totally different programs.)  You can
call these numbers "basically uniform" if you like, but the claim that
Friday occurs more often is correct.

|> And finally, here are the results of the run:
|> 
|> Summary of days which the 13th happen on:
|> 
|>       4800 total items
|> 
|>        Sun found  687 times
|>        Mon found  685 times
|>        Tue found  685 times
|>        Wed found  687 times
|>        Thu found  684 times
|>        Fri found  688 times
|>        Sat found  684 times

(Anyone wanting to repeat the attempt should remember to use the
Gregorian calendar for 400 consecutive years.  That is a necessary
and sufficient requirement.  If you use Unix 'cal', start after 1752.)

Daan Sandee
Burlington, MA                                           sandee@think.com