mean and standard deviation code

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

[Daniel Shub]

I am closing as a DOIT4ME

Answer 1

[Image Analyst]

Look at the second input argument of mean().

[joo]

thanjk kyou so mcuh

[joo]

can you please see this doubt ? http://www.mathworks.com/matlabcentral/answers/55071-how-to-do-a-trendline

Answer 2

[Mitch Martelli]

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