R Exercises | Programming Exercises for Finance in the R Language

Introduction to R: Exercises

4. Defining vectors. The c() function can be used to create vectors in R. For example, the vector [1, 2, 3, 4, 5] can be defined with the command c(1,2,3,4,5).

Define the following vectors:

["one", "two", "three"]
[TRUE, FALSE, TRUE]
[1, "two", TRUE]



                            # Define the vector ["one","two","three"].
                            char_vector <- c(___,"two",___)

                            # Define the vector [TRUE,FALSE,TRUE].
                            logical_vector <- ___(___,___,___)

                            # Define the vector [1,"two",TRUE].
                            mixed_vector <- ____


                            # Define the vector ["one","two","three"].
                            char_vector <- c("one","two","three")

                            # Define the vector [TRUE,FALSE,TRUE].
                            logical_vector <- c(TRUE,FALSE,TRUE)

                            # Define the vector [1,"two",TRUE].
                            mixed_vector <- c(1,"two",TRUE)


                            test_error()
                            test_object("char_vector", incorrect_msg="Did you define the elements of `char_vector` correctly?")
                            test_object("logical_vector", incorrect_msg="Did you use the function `c()` to define `logical_vector`?")
                            test_object("mixed_vector", incorrect_msg="Did you use the function c`()` to define `mixed_vector`?")
                            success_msg("Excellent work! Notice that `mixed_vector` contains character, logical, and numerical variables.")

Did you use the `c()` function correctly?

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