Suppose you have a matrix , x containing the scores of students in a class. Five

Question

Suppose you have a matrix , x containing the scores of students in a class. Five tests were given. All scores lie in the range of 0-100. The matrix consists of the following:

Column 1 : The U-Number of each student

Column 2: Test scores of all students in Test 1

Column 3: Test scores of all students in Test 2, etc.

(a) Write Matlab code to create a vector z, containing the average score of each student in the five tests.

(b) Write a code to arrange the elements of z created above in descending order.

(c) Write a Matlab code to create a vector that contains the maximum score attained in each test.

(d) Write a code to determine median score attained in each test.

Explanation / Answer

% Here A is matrix as per requirement
% first column is U_number of next five is score in each test of each student
A=[1   23   45   34   51   44
   2   76   62   43   82   45
   3   45   56   56   43   54
];
% Copy A into B
B=A
% This command skips the first column which is U_number and store only test score in B
B(:, 1) = [];
% Calculate average score of each student and store it in a vector
getans=mean(B.')
% Sort the vector in descending order
getans = sort(getans,'descend')
% Calculate the maximum score in each test and store it in a vector
vv=max(B)
% Calculate median of each test and store it in a vector
med=median(B)

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.