MATLAB: Percentage to Letter Grade

gradeMATLAB

I must create a function that outputs a letter grade based on the combined percentage a student scored on an multiple choice quiz and an essay. The multiple choice part of the quiz is worth 60% of the total grade and the essay is worth 40% of the total grade. How do I write code that incorporates the quiz being 60% worth of the total grade, and the essay being 40% of the total grade? Any help would be appreciated, thank you!

Best Answer

final_mark = mark_for_first_thing * weight_of_first_thing / 100 + mark_for_second_thing * weight_of_second_thing / 100;

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MATLAB: How to let user enter student id and show the final marks

You may refer to the following two functions and create the actual ones.

function y= get_marks(id)
% Gives the marks against the student id
load marks
pos=find(marks(:,1)==id,1);
y=[marks(pos,2) marks(pos,3) marks(pos,4)];
end
function [final_mark, grade]=markscale(input)
%calculates the total marks and grade
final_mark=0.1*input(1)+0.2*input(2)+0.7*input(3);
if(final_mark>50) 
    grade='pass';
else grade='fail';
end
end

Here I have stored the marks in a mat file called 'marks' which has a variable 'marks' inside it. However, if you are using a text file you may read data using 'fscanf' function.

To generate a random matrix for marks I have used the following code.

 marks(:,1)=1:10;
 marks(:,2)=randi([1 100],10,1);
 marks(:,3)=randi([1 100],10,1);
 marks(:,4)=randi([1 100],10,1);

Here the first column is student id and the rest three columns are the marks.

MATLAB: How to get the student version

You should contact your school's IT department. They should be able to give you instructions on how to install using the campus-wide license.

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Related Solutions

MATLAB: How to let user enter student id and show the final marks

MATLAB: How to get the student version

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