Logical operators (&, |, !, &&, ||) in R Programming - Mini Project: Build & Apply

Using Logical Operators in R

📖 Scenario: You are working with a small dataset of students' test scores. You want to find out which students passed based on certain conditions using logical operators.

🎯 Goal: Build a simple R program that uses logical operators &, |, and ! to check students' scores and print who passed.

📋 What You'll Learn

Create a named vector called scores with exact student names and scores

Create a variable called pass_mark with the value 60

Use logical operators &, |, and ! to find students who passed or failed

Print the final result showing which students passed

💡 Why This Matters

🌍 Real World

Logical operators help filter and select data based on conditions, useful in data analysis and decision making.

💼 Career

Understanding logical operators is essential for data scientists, analysts, and programmers to write conditions and control program flow.

1

Create the scores vector

Create a named numeric vector called scores with these exact entries: Alice = 58, Bob = 75, Charlie = 62, Diana = 45, Eva = 80.

R Programming

# Create the scores vector with exact names and values
# Your code here

Need a hint?

Use the c() function with named elements like Alice = 58.

2

Set the passing mark

Create a variable called pass_mark and set it to the number 60.

R Programming

scores <- c(Alice = 58, Bob = 75, Charlie = 62, Diana = 45, Eva = 80)
# Create pass_mark variable and set it to 60
# Your code here

Need a hint?

Just assign the number 60 to pass_mark.

3

Use logical operators to find who passed

Create a logical vector called passed that is TRUE for students with scores greater than or equal to pass_mark and FALSE otherwise. Use the logical operator >=.

R Programming

scores =
# Your code here

Need a hint?

Use passed <- scores >= pass_mark to get TRUE or FALSE for each student.

4

Print the students who passed

Use print() to display the names of students who passed. Use the logical vector passed to select names from scores.

R Programming

scores = pass_mark
# Print names of students who passed
# Your code here

Need a hint?

Use names(scores)[passed] inside print() to show who passed.