R Programming Practice Test 1

1. What is the mode of b in the following R code?

     b <- c(TRUE, TRUE, 1)

2. How can we define ‘infinity’ in R language?

3. How can we define ‘undefined value’ in R language?

4. Functionality of R is divided into a number of __________

5. In 1991, R was created by Ross Ihaka and Robert Gentleman in the Department of Statistics at the University of _________

6. What is the length of b?

b <- 2:7

7. In R language, a vector is defined that it can only contain objects of the ________

8. If the code is stored in the external file, which of the following function is used to call them to a working directory?

9. Which of the following will start the R program?

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