How to take an average?

I have this array and according to excel histogram plot the mostly values are located in the range [-0.5,0.5]. I want to sort all values from the array A that lies in this range and take there average. How can I do this?

A= [0.0000    0.4341   -0.0000   -0.5910   -0.0352    2.0350   -0.0000   -0.9597    0.0000   -1.2164   -2.7826   -0.0000    0.3716 -0.0000   -0.0000   -0.0000    1.4557    0.0000   -0.0000    0.5599   -0.0000   -0.2463   -0.7001    0.0000] 

Answer 1

[Raghvi]

Hey Haya,

To find the range in which most values are present, you can use the histcount() function: https://www.mathworks.com/help/matlab/ref/histcounts.html

[n,e] = histcounts(A); 

This will partitions the A values into bins(ranges), and returns the count in each bin(n), as well as the bin edges(e).

So the maximum values will be present in the range:

[maxn,i] = max(n); 
range = [e(i), e(i+1)]; 

In this case it will be (0,1)

To find the average of only these values:

x = A >= range(1) & A<= range(2); % or > and < instead of >= and <= 
result = mean(A(x)); 

Answer 2

[HimeshNayak]

Hi Haya,

From what I understand, you want to find the average of the range of the elements present in the array. Follow the following steps:

1. Find the range of the element in the array.

[minA, maxA] = bounds(A);

2. Store the range values in an array.

M = [minA, maxA];

3. Find the average / mean of the values.

avg = mean(M); 

Regards

HimeshNayak