Question

What is the output of the following R code?

(subsetting) x <- c("a", "b", "c", "c", "d", "a")
u <- x > "a"

A. TRUE TRUE FALSE FALSE FALSE TRUE.
B. TRUE FALSE TRUE TRUE TRUE FALSE.
C. FALSE TRUE FALSE FALSE FALSE TRUE.
D. TRUE TRUE TRUE TRUE TRUE TRUE.

Answer 1

The output of the given R code is TRUE FALSE TRUE TRUE TRUE FALSE. The expression compares each element of the vector with the value 'a', resulting in a logical vector.

Step-by-step explanation:

The output of the given R code is B. TRUE FALSE TRUE TRUE TRUE FALSE.

In the given code, x is a vector containing the elements 'a', 'b', 'c', 'c', 'd', and 'a'.

The expression x > 'a' compares each element of x with the value 'a', resulting in a logical vector where TRUE corresponds to the elements that are greater than 'a' and FALSE corresponds to the elements that are equal to or less than 'a'.

Therefore, the output vector is TRUE FALSE TRUE TRUE TRUE FALSE which matches option B.