For loop in R Programming - Mini Project: Build & Apply

Using a For Loop in R

📖 Scenario: You work in a small bakery and want to calculate the total number of cookies sold in a week. You have the daily sales numbers and want to add them up.

🎯 Goal: Build a simple R program that uses a for loop to sum daily cookie sales and print the total.

📋 What You'll Learn

Create a vector called daily_sales with the exact values: 12, 15, 10, 20, 18, 25, 22

Create a variable called total_sales and set it to 0

Use a for loop with the variable sales to iterate over daily_sales

Add each sales value to total_sales inside the loop

Print the value of total_sales

💡 Why This Matters

🌍 Real World

Summing daily sales is a common task in small businesses to track performance over time.

💼 Career

Understanding loops and data aggregation is essential for data analysis and reporting roles.

1

Create the daily sales data

Create a vector called daily_sales with these exact values: 12, 15, 10, 20, 18, 25, 22

R Programming

# Create the daily_sales vector with the exact values
# Your code here

Need a hint?

Use the c() function to create a vector with the numbers inside parentheses separated by commas.

2

Create a variable to hold the total sales

Create a variable called total_sales and set it to 0

R Programming

daily_sales <- c(12, 15, 10, 20, 18, 25, 22)
# Create total_sales variable and set it to 0
# Your code here

Need a hint?

Just assign 0 to the variable total_sales.

3

Use a for loop to add daily sales

Use a for loop with the variable sales to iterate over daily_sales and add each sales value to total_sales inside the loop

R Programming

daily_sales <- c(12, 15, 10, 20, 18, 25, 22)
total_sales <- 0
# Use a for loop to add each sales value to total_sales
# Your code here

Need a hint?

Use for (sales in daily_sales) { ... } and inside add sales to total_sales.

4

Print the total sales

Write print(total_sales) to display the total number of cookies sold in the week

R Programming

daily_sales <- c(12, 15, 10, 20, 18, 25, 22)
total_sales <- 0
for (sales in daily_sales) {
  total_sales <- total_sales + sales
}
# Print the total_sales value
# Your code here

Need a hint?

Use the print() function to show the value of total_sales.