Factors are created using the . . . . . . . . function.
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R Programming · all questionsR Programming Basics
R Programming Basics
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
131
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First component of the list can be accessed by . . . . . . . .
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Which function is used to enter in data at the terminal?
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Which are indexed by either row or column using a specific name or number?
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What will be the output of the following R code?
> x <- list(1, "a", TRUE, 1 + 4i)
> xOptions are not available for this question.
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What will be the output of the following R code?
> m <- matrix(1:4, nrow = 2, ncol = 2)
> dimnames(m) <- list(c("a", "b"), c("c", "d"))
> mSelect an option to see the answer and solution.
Which of the following is used for reading tabular data?
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Point out the correct statement?
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Computation with vectors is achieved using an element-by-element operation for avoiding . . . . . . . .
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A data frame is a special type of list where every element of the list has . . . . . . . . length.
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What will be the output of the following R code?
> x <- c(1, 2, NaN, NA, 4)
> is.na(x)Select an option to see the answer and solution.
Accessing elements is achieved through a process called . . . . . . . .
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A . . . . . . . . is an R-object which can contain many different types of elements inside it.
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Data frames can be converted to a matrix by calling data . . . . . . . .
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On what basis of a variable, OS allocates memory and decides what can be stored in the reserved memory?
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Which is more general than a matrix, in that different columns can have different modes?
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What will be the output of the following R code?
> x <- c("a", "b", "c")
> as.logical(x)Select an option to see the answer and solution.
Lists can be created using the . . . . . . . . function.
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Joining two lists can be achieved either using the . . . . . . . . function.
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Q100
Open questionR objects can have attributes, which are like . . . . . . . . for the object.
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