Please note, solutions are available here. Exercise 1 Create three vectors x,y,z with integers and each vector has 3 elements. Combine the three vectors to become a 3×3 matrix A where each column represents a vector. Change the row names to a,b,c. Think: How about each row represents a vector, can you modify your code […]

## Logical vectors and operators

Before you start, enter the following code: data How difficult was this for you? (1 star=easy, 10 stars=hard) Are you a beginner (1 star), intermediate (2 stars) or advanced (3 stars) R user?

## Regular sequences

Before proceeding, please review Chapter 2 of An Introduction to R and the internal R Documentation for the seq() function (type ?seq in the R console). Solutions are available here. Excercise 1 Using the seq() function, generate the sequence 2, 5, 8, 11. Exercise 2 Use the seq() function to generate the sequence 9, […]

## Vector exercises

A vector is a simple data structure in R. You will use it frequently, often as a building block of more complex data structures and operations on those structures. Before proceeding, please review Chapter 2 of An Introduction to R. First, write down your answer, without using R and without looking at the answer options. […]