calculating average value for matrix

I have a matrix of size 50x3

i want to find the average for each value by calculating recall and precision

is it possible,if so what are all the variables needed

please help

Answer 1

[Andrei Bobrov]

out = abs(A-B)./A

Answer 2

[BHANESH BHADRECHA]

% suppose name of the matrix is 'm'

    [a,b]=size(m);
    s=sum(m);         % sum of all columns
    total=sum(s);     % total sum
    avg=total/(a*b);

[BHANESH BHADRECHA]

example let

m =
     1     2     3
     4     5     6
     7     8     9

[a,b]=size(m)  will give a=3 and b=3,

now s=sum(m) will be    s= 12  15  18

total = 12+15+18  =  45

avg= 45/9 = 5

[Walter Roberson]

For the operation you are doing, mean2(m) does everything. This operation is, though, not what the Question is asking about, which is about Recall and Precision

Answer 3

[Aravin]

mean of each value can't be calculated but you can get average of each column or row.

mean(M,1) % mean of each column 
mean(M,2) % mean of each row

but to get precision and recall. You have to provide more information. Like precision in what and recall of what ?

[kash]

I have two matrices of 50x3,A and B

A is the original matrix

B is the matrix after performing some operation

now i sit possible to calculate precision and recall for B matrix,the accuracy for each value

Answer 4

[Junaid Qadir]

clc

close all

clear all

N=9;

M=5;

Accum=zeros(M,1);

for i= 1:N

    x=i+1;

    %x= randn(M,1);

    Accum= Accum+x;

end

Avg= Accum/N;