Find a mean value for specific rows?

Hello,

I have a data 500000x5 and I need to find a mean value of specific rows. For example the mean of the rows between 100 and 120.

Does anyone knows how to do this?

Thanks in advnace.

Answer 1

[Abdolkarim Mohammadi]

To find the mean for specific rows of matrix A:

MyMean = mean (A(:,(100:120)),2);

[Ilkin Abdullayev]

Thanks a lot.