How to calculate the average value of selected row, column from a given matrix.

I have a matrix A =[ 16 2 3 13 16 ; 5 11 10 8 8 ; 9 7 6 12 5; 4 14 15 1 3] . I want to calculate the avarage value for A(i.j) where i ranges from 1 to 3 and j from 0 to 2. Can You please help me with this?

Answer 1

[U B]

A = magic(5);  
n = A(2:4,1:3); % value I want to read
M = mean2(n);

Answer 2

[Arif Hoq]

A =[ 16	2    3    13    16 ; 5	11    10    8    8 ; 9    7    6    12     5; 4    14    15    1    3] 

A = 4×5

16 2 3 13 16 5 11 10 8 8 9 7 6 12 5 4 14 15 1 3

i=1:3;
j=1:2;
out_each_col=mean(A(i,j),1)

out_each_col = 1×2

10.0000 6.6667

out_each_row=mean(A(i,j),2)

out_each_row = 3×1

9 8 8

[U B]

Thanks a lot.