Point out the wrong statement?
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R Programming · all questionsData Structures in R Programming
Data Structures in R Programming
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What will be the output of the following R code?
> x <- matrix(1:6, 2, 3)
> x[1, 2]Select an option to see the answer and solution.
Individual R objects can be saved to a file using the . . . . . . . . function.
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If you have a lot of objects that you want to save to a file, we use . . . . . . . . function.
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Multiple objects can be de parsed at once using the . . . . . . . . function.
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When you call serialize() on an R object, the output will be . . . . . . . . coded in hexadecimal format.
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Which of the following code extracts 1st element of the 2nd element?
> x <- list(a = list(10, 12, 14), b = c(3.14, 2.81))Select an option to see the answer and solution.
Which of the following object is masked from 'package: stats'?
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What will be the output of the following R code?
> x <- list(aardvark = 1:5)
> x[["a", exact = FALSE]]Select an option to see the answer and solution.
Point out the wrong statement?
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One way to pass data around is by de parsing the R object with . . . . . . . .
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.RData extension used when we save data using the functions . . . . . . . .
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Which of the following extracts first element from the following R vector?
> x <- c("a", "b", "c", "c", "d", "a")Select an option to see the answer and solution.
Point out the correct statement?
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Which of the following R statement will save the output to the file for following R code?
> a <- data.frame(x = rnorm(100), y = runif(100))
> b <- c(3, 4.4, 1 / 3)Select an option to see the answer and solution.
The benefit of the . . . . . . . . function is that it is the only way to perfectly repressed an R object in an exportable format, without losing precision or any metadata.
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What will be the output of the following R code?
> x <- as.Date("2012-01-01")
> y <- strptime("9 Jan 2011 11:34:21", "%d %b %Y %H:%M:%S")
> x-ySelect an option to see the answer and solution.
Which of the following return a subset of the columns of a data frame?
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Q100
Open questionWhat will be the output of the following R code?
> x <- c("a", "b", "c", "c", "d", "a")
> x[c(1, 3, 4)]Select an option to see the answer and solution.