Problem 4: Use a MATLAB command to determine the number of rows and columns in t

Question

Problem 4: Use a MATLAB command to determine the number of rows and columns in the array. Column 1 contains time values, columns 2 through 6 contains the data from 5 sensors (each sensor in one column) for each time. Without creating any arrays that are a subset of the sensor array (otherwise you will lose all the points for this questions) perform the following tasks: • determine the average of the sensor readings for each time (do not include the time values in the average calculation), • add the average values to the sensor array to create column 7 of the array, • calculate the mean and standard deviation for each sensor, • calculate the mean and standard deviation for all the sensors readings

Explanation / Answer

% let l be the Given Array
[x,y] = size (l)
for i = 1:x
   am = 0.0;
   for j = 2:6
       am += l(i,j);
   end
   fprintf("Average for each time is %f",am/5);
   l(i,7) = am/5;
end

% mean and standard deviation for each sensor
for j = 2:6
   sum = 0.0
   for i = 1:x
       sum += l(i,j);
       % put formula for standard deviation here
   end
   fprintf("Means for each sensor is %f ",sum/x);
end

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