How to do the following on MATLAB A college professor would like to compare how

Question

How to do the following on MATLAB

A college professor would like to compare how students perform on a test she gives each year. The following is the first and second year data as follow: Year 1 Student 1 Student 2 Question 1 Question 2 Question 3 Question 4 10 8 10 10 Student 3 Student 4 Student 5 10 Year 2 Question 1 Question 2 Question 3 Question 4 Student1 10 Student 2 Student 3 Student 4 Student 5 10 10 Create a multidimensional array called data Using atestdata created in a. calculate the average score for each question using mean, for each year, and store the results in a 2x4 2D array avg Calculate the average score for each question for year 1 and 2, and store them to all_avg Extract the data for Question 3 for each year from testdata, and create a 5x2 array, question_3, and display the array question_3. a. testdata with two pages each stores first and second years' test b. c. d.

Explanation / Answer

Code:-

clear all
clc

testdata = zeros(5,4,2);
year1= [3,6,4,10;5,8,6,10;4,9,5,10;6,4,7,9;3,5,8,10];
year2= [2,7,3,10;3,7,5,10;4,5,5,10;3,3,8,10;3,5,2,10];

testdata(:,:,1) = year1;
testdata(:,:,2) = year2;

avg = zeros(2,4);

avg(1,:) = mean(testdata(:,:,1));
avg(2,:) = mean(testdata(:,:,2));

all_avg = mean(avg);

question3 = reshape(testdata(:,3,:),5,2);

avg
all_avg

disp("question3= ")
disp(question3)

Output:-

avg =

    4.2000    6.4000    6.0000    9.8000
    3.0000    5.4000    4.6000   10.0000

all_avg =

   3.6000   5.9000   5.3000   9.9000

question3=
   4   3
   6   5
   5   5
   7   8
   8   2

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