Quiz will ask 20 randomly selected questions with allotted time of . You can take the quiz more than once. Once you submit the quiz, you can review how you have done, the correct the answers for each questions and the explanation for the correct the answer.
11 Modules
Which of the following is a valid way to create a variable in R?
var1 <- 10
var2 = 20
var3: 30
var4 <<- 40
What will be the output of the following code? x <- c(1, 2, 3); y <- c(4, 5, 6); z <- x + y; print(z)
c(5, 7, 9)
c(1, 2, 3)
c(4, 5, 6)
Error in addition
Which of the following data types can be stored in a list in R?
Numeric
Character
Logical
All of the above
What is the result of the following code? a <- 5; b <- 10; c <- a > b; print(c)
TRUE
FALSE
NA
Error
Which of the following correctly creates a factor variable in R?
factor_var <- factor(c('A', 'B', 'A'))
factor_var <- c('A', 'B', 'A')
factor_var <- as.factor(c(1, 2, 1))
Both A and C
11 Modules