MCQs R Vectors 5 March 17, 2021 | No Comments This quiz contains MCQs R Vectors. Online MCQs R Language Test 1. What is the output of the following R code? r <- 0:10 r[2] 3 0 2 1 2. Which of the describe R Language best Available for free trial only Testing Free Paid 3. What is the output of the following R code? x <- c("a", "b") as.numeric(x) NAN TRUE TRUE c) NA NA (Warning message: NAs introduced by coercion) 1 2 4. If a command is incomplete at the end of a line, R will give a different prompt, by default it is _____ – * + / 5. What is the output of the following R code? y <- 0:5 vector(y) y[3] 3 Error in vectory(y): invalid ‘mode’ argument 1 4 6. ________ operator is used to create integer sequences. – ~ : ; 7. Identify the wrong statement: Windows versions of R have other optional help systems also The help.search( ) (or ??) command allows searching for help in various ways R is case insensitive as are most UNIX based packages, so A and a are the same symbols and would refer to same variables $R is used to start the R Program 8. How one can define ‘infinity’ in R Language? NaN Inf Und Sup 9. How can one define ‘undefined value’ in R Language? Inf NaN Und Sup 10. The following command can be used to print an object “x” in R? cout(x) print(x) printf(x) print x Loading … R Language Quiz
