Extracts first four element.

Spread function is known as ____ in spreadsheets.

The collection of objects currently stored in R is called the _____

Which of the following code will print NULL?

 Which of the following code will print NULL? 

What is the output of the code?

> x <- vector("numeric", length = 10)
> x

  which of the following is a new package that makes it easy to “tidy” your data?

 If a programmer wants the output to be a list then ___________ function is used. 

Which command is used for storing R objects in a file?

Which of the following functions creates n samples of size "size" with probability "prob" from the binomial distribution?