R Programming Practice Test 7

1. The profiler can be turned off by passing _________ to Rprof().

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

3. ________ is used to create a plot to illustrate patterns of missing values.

4. Which of the following is a plot to investigate the order in which observations were recorded?

5. Point out the correct statement?

6. What will be the output of the following R code?

 > pnorm(2) 

7. _______ divides the time spend in each function by the total run time

8. __________ create a complete ggplot appropriate to a particular data type.

9. Which of the following is valid body of split function?

10. ______ suspends the execution of a function wherever it is called and puts the function in debug mode.