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Mathematica 教學:Just for Fun

戴忠淵 於 2014年8月30日星期六 下午5:51 發表
http://www.ptt.cc/bbs/Mathematica/M.1408824011.A.055.html

Q: 5X5方格中放置1~25的數字,數字是隨機放置,移動的路徑長度的平均數與變異數為何?。

Clear["Global`*"];
DynamicModule[{i,temp,dist,newdata},
dist[data_]:=
N@Total[EuclideanDistance@@@
Partition[Flatten[Position[data,#]&/@Range[25],1],2,1]];
temp={};i=0;
Dynamic[{i=i+1;
newdata:=Partition[RandomSample[Range[25],25],5];
temp=Join[temp,{dist[newdata]}]};
Column[{MatrixForm[newdata],
Grid[{{"Distance=",dist[newdata]}}],
Histogram[temp,{25,100,1},"PDF",Frame->True,Axes->None,
PlotRange->{{40,100},{0,0.2}},ImageSize->400,
Epilog->Inset[
Grid[{
{"Samplesize=",Length@temp},
{"\[Mu]=",NumberForm[N@Mean@temp,{7,4}]},
{"\[Sigma]=",NumberForm[N@StandardDeviation@temp,{5,4}]},
{"Shapiro\[Dash]Wilktest",NumberForm[ShapiroWilkTest[temp],{5,4}]}},
Frame->True,Alignment->{{Right,Left}}],{85,0.15}]]}]]]
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