Relational expressions in MATLAB - Mini Project: Build & Apply

Relational Expressions in MATLAB

📖 Scenario: Imagine you are a teacher who wants to check which students passed an exam. You have their scores and a passing score threshold.

🎯 Goal: You will create a MATLAB program that uses relational expressions to find out which students passed the exam.

📋 What You'll Learn

Create a vector with exact student scores

Create a variable for the passing score threshold

Use a relational expression to find which scores are greater than or equal to the threshold

Display the logical result showing who passed

💡 Why This Matters

🌍 Real World

Teachers and trainers often need to check which students or trainees passed a test based on their scores.

💼 Career

Understanding relational expressions is important for data analysis, filtering data, and making decisions in programming jobs.

1

Create the student scores vector

Create a vector called scores with these exact values: [55, 70, 48, 90, 65]

MATLAB

% Create the vector 'scores' with the values [55, 70, 48, 90, 65]
% Your code here

Need a hint?

Use square brackets [] to create a vector in MATLAB.

2

Set the passing score threshold

Create a variable called passing_score and set it to 60

MATLAB

scores = [55, 70, 48, 90, 65];
% Create the variable 'passing_score' and set it to 60
% Your code here

Need a hint?

Use the assignment operator = to set the value.

3

Use a relational expression to find passing scores

Create a variable called passed that stores the result of the relational expression scores >= passing_score

MATLAB

scores = [55, 70, 48, 90, 65];
passing_score = 60;
% Create 'passed' using the relational expression 'scores >= passing_score'
% Your code here

Need a hint?

Use the relational operator >= to compare each score to the passing score.

4

Display the passing results

Use disp(passed) to display the logical vector showing which students passed

MATLAB

scores = [55, 70, 48, 90, 65];
passing_score = 60;
passed = scores >= passing_score;
% Display the 'passed' vector
% Your code here

Need a hint?

Use disp to print the variable to the command window.