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 > >