Average values using Octave

% set matrix
Patient_HR = [ 40 45 50 47; 68 66 68 69; 77 75 76 78 ]

% get matrix row and height
[ rows, columns ] = size(Patient_HR)

% create a n-row, single column matrix of zeros
AverageHR = zeros( rows, 1 )

% loop through each row in matrix
for index = 1 : rows
    % assign temp to row
    temp = Patient_HR(index, :)
    
    % average values in temp row and set in AverageHR matrix
    AverageHR(index, 1) = mean(temp)
end