mean and standard deviation code
1 回表示 (過去 30 日間)
古いコメントを表示
i have
3 2 4
2 3 7
4 2 3
i want the mean
3 (3+2+4 /3)
4 (2+3+7 /3)
3 (4+2+3 /3)
and i want the standard deviation
1
0,577350269
2,081665999
can someone give me the code to do this? thank yo
採用された回答
その他の回答 (1 件)
Mitch Martelli
2012 年 11 月 28 日
Hi,
From your post i suppose that you would like the mean rows by rows, and you want the standard deviation columns by columns.
In litirature there is two different way to define the standard devaition.
So you can set the variable type to 0 if you want to normalize by (n-1) or you can set 1 if you would like to normalize by n.
See Matlab help or wikipedia for more information.
Example code :
data=[3 2 4
2 3 7
4 2 3 ];
mean_data=mean(data,2);
type=0;
std_data=std(data,type,1);
Best regards
M1tC4
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Logical についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!