1. R functionality is divided into a number of

2. ____ ____is used to apply a function over subsets of a vector

3. The debug( ) flags a function for ______ mode in R mode.

4. The lapply( ) function takes _______ arguments

5. Which of the following is a base package for R language?

6. R comes with a ________ to help you optimize your code and improve its performance.

7. Which of the following is an example of a vectorized operation for subtraction operation

> x<- 1:4
> y<- 6:9

8. What would be the output of the following code?
> x <- 1:4
> x > 2

9. What would be the output of the following code?

> x <- 1:4
> y <- 6:9
> z <- x + y
> z

10. ______ function is same as lapply( )

11. A matrix is _______ dimensionsinal rectangular data set?

12. Which of the following method make a vector of repeated values?

13. Which of the following is used for Statistical analysis in R language?

14. _______ applies a function over the margins of an array

15. The ________ function takes a vector or other objects and splits it into groups determined by a factor or list of factors.

16. What would be the value of the following expression?

> log(-1)

17. _______ loop over a list and evaluate a function on each element