41. Columns can be arranged in descending order too by using the special . . . . . . . . operator.
42. Point out the wrong statement?
43. Which of the following is used for reading tabular data?
> y <- data.frame(a = 1, b = "a")
> dput(y, file = "y.R")
> new.y <- dget("y.R")
> new.y
> y <- data.frame(a = 1, b = "a")
> dput(y, file = "y.R")
> new.y <- dget("y.R")
> new.y
44. . . . . . . . . is used for outputting a textual representation of an R object.
45. Which of the following function is identical to read .table?
46. Point out the correct statement?
47. What will be the output of the following R code?
> x <- Sys.time()
> class(x)
> x <- Sys.time()
> class(x)
48. . . . . . . . . function is similar to the existing subset() function in R but is quite a bit faster.
49. Which of the following is used for reading in saved workspaces?
50. What will be the output of the following R code?
> x <- 1:4
> x > 2
> x <- 1:4
> x > 2
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