Arithmetic Operations with Vectors
Vectors in R offer a significant advantage due to their flexibility with various operations. For instance, if you have two vectors of the same length, you can easily perform addition or subtraction on an element-by-element basis.
Additionally, vectors can undergo arithmetic operations with single numbers, which apply the operation to each element of the vector. For example, let's create a vector with the numbers 10, 20, 30 and add 40, 25, 5 to each corresponding element:
123456# Vectors a <- c(10, 20, 30) b <- c(40, 25, 5) # Addition c <- a + b c
Now, let's go ahead and multiply each element by 2:
123456a <- c(10, 20, 30) b <- c(40, 25, 5) c <- a + b # Multiplication d <- c * 2 d
R also provides a variety of aggregate and statistical functions. Let's explore two of the most common ones:
sum()- calculates and returns the sum of all vector elements;mean()- computes and returns the average value of the vector elements.
We will proceed with our previous example and calculate the sum of all vector elements:
123456a <- c(10, 20, 30) b <- c(40, 25, 5) c <- a + b d <- c * 2 # Calculating the sum sum(d)
Swipe to start coding
Let's revisit our example with a small local store. This time we have data on the number of sales.
| Item | Price | Items sold |
|---|---|---|
| Sofa | $340 | 5 |
| Armchair | $150 | 7 |
| Dining table | $115 | 3 |
| Dining chair | $45 | 15 |
| Bookshelf | $160 | 8 |
- Construct a vector called
soldwith the respective values from the Items sold column. - Calculate the
revenueby multiplying thepricesandsoldvectors and then output the result. - Display the total sum of the
revenuevector.
Oplossing
Bedankt voor je feedback!
single
Vraag AI
Vraag AI
Vraag wat u wilt of probeer een van de voorgestelde vragen om onze chat te starten.
Awesome!
Completion rate improved to 3.85Arithmetic Operations with Vectors
Veeg om het menu te tonen
Vectors in R offer a significant advantage due to their flexibility with various operations. For instance, if you have two vectors of the same length, you can easily perform addition or subtraction on an element-by-element basis.
Additionally, vectors can undergo arithmetic operations with single numbers, which apply the operation to each element of the vector. For example, let's create a vector with the numbers 10, 20, 30 and add 40, 25, 5 to each corresponding element:
123456# Vectors a <- c(10, 20, 30) b <- c(40, 25, 5) # Addition c <- a + b c
Now, let's go ahead and multiply each element by 2:
123456a <- c(10, 20, 30) b <- c(40, 25, 5) c <- a + b # Multiplication d <- c * 2 d
R also provides a variety of aggregate and statistical functions. Let's explore two of the most common ones:
sum()- calculates and returns the sum of all vector elements;mean()- computes and returns the average value of the vector elements.
We will proceed with our previous example and calculate the sum of all vector elements:
123456a <- c(10, 20, 30) b <- c(40, 25, 5) c <- a + b d <- c * 2 # Calculating the sum sum(d)
Swipe to start coding
Let's revisit our example with a small local store. This time we have data on the number of sales.
| Item | Price | Items sold |
|---|---|---|
| Sofa | $340 | 5 |
| Armchair | $150 | 7 |
| Dining table | $115 | 3 |
| Dining chair | $45 | 15 |
| Bookshelf | $160 | 8 |
- Construct a vector called
soldwith the respective values from the Items sold column. - Calculate the
revenueby multiplying thepricesandsoldvectors and then output the result. - Display the total sum of the
revenuevector.
Oplossing
Schakel over naar desktop voor praktijkervaringGa verder vanaf waar je bent met een van de onderstaande optiesBedankt voor je feedback!
Awesome!
Completion rate improved to 3.85single
