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Re: Coin Toss Sim

• To: mathgroup at smc.vnet.net
• Subject: [mg122467] Re: Coin Toss Sim
• From: "Dr. Wolfgang Hintze" <weh at snafu.de>
• Date: Sat, 29 Oct 2011 07:11:56 -0400 (EDT)
• Delivered-to: l-mathgroup@mail-archive0.wolfram.com
• References: <j89v28$8e$1@smc.vnet.net> <j8dstg$k5b$1@smc.vnet.net>

Sorry, my solution is nonsense (five times "head" in the list, only 3 
times in count).
The point is indeed the delayed evaluation for g, as many of you have 
pointed out.

--- Wolfgang

"Dr. Wolfgang Hintze" <weh at snafu.de> schrieb im Newsbeitrag 
news:j8dstg$k5b$1 at smc.vnet.net...
>
> "pooleman133" <poolebc221 at gmail.com> schrieb im Newsbeitrag
> news:j89v28$8e$1 at smc.vnet.net...
>>I am new to mathematica and am trying to make a coin flipping
>>simulation however mo code isn't working. When I tell it to count the
>>number of head it gives me a bad count. The code I am using is listed
>>below any help would be greatly appreciated.
>>
>> y[n_] := Block[{g, s},
>>
>>
>>  g := RandomChoice[{"head", "tail"}, n];
>>  s := Count[g, "head"];
>>  {g, s}
>>  ]
>>
> If I avoid RandomChoice it works fine:
>
> y[n_] := Block[{g, s},
> g := Table[If[Random[] < 1/2, "head", "tail"], {n}];
> s := Count[g, "head"]; {g, s}]
> y[10]
>
> {{"tail", "head", "head", "head", "tail", "tail",
> "tail", "head", "head", "tail"}, 3}
> -- Wolfgang
>
>