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 applies 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.
Now, let's go ahead and multiply each element by 2.
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.
Tarea
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.
¿Todo estuvo claro?
Contenido del Curso
R Introduction: Part I
R Introduction: Part I
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 applies 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.
Now, let's go ahead and multiply each element by 2.
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.
Tarea
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.
¿Todo estuvo claro?
