Q121
Open questionWhat will be the output of the following R code snippet?
> paste("a", "b", se = ":")Select an option to see the answer and solution.
R Programming · all questionsControl Structures in R Programming
Control Structures in R Programming
practice.
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Q122
Open questionCRAN package ecosystem has more than . . . . . . . . packages.
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Q123
Open question. . . . . . . . function will measure the probability of the binary response variable in R language.
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Q124
Open questionPoint out the correct statement?
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Q125
Open questionHow missing values and impossible values are represented in R language?
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Q126
Open questionWhat will be the output of the following R code?
> x <- list(a = 1:4, b = rnorm(10), c = rnorm(20, 1), d = rnorm(100, 5))
> lapply(x, mean)Select an option to see the answer and solution.
Q127
Open questionThe . . . . . . . . function takes a vector or other objects and splits it into groups determined by a factor or list of factors.
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Q128
Open questionThe . . . . . . . . function is used to plot negative likelihood.
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Q129
Open questionlappy functions takes . . . . . . . . arguments in R language.
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Q130
Open questionWhich function is more verbose?
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Q131
Open questionWhich function calculates the count of each category of a categorical variable?
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Q132
Open question. . . . . . . . applies a function over the margins of an array.
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Q133
Open questionThe syntax of the for loop is?
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Q134
Open questionWhat will be the output of the following R code?
> printmessage2 <- function(x) {
+ if(is.na(x))
+ print("x is a missing value!")
+ else if(x > 0)
+ print("x is greater than zero")
+ else
+ print("x is less than or equal to zero")
+ invisible(x)
+ }
> printmessage2(NA)Select an option to see the answer and solution.
Q135
Open question. . . . . . . . require you to pass a function whose argument is a vector of parameters.
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Q136
Open questionWhich of the following is valid syntax for if else statement in R?
Options are not available for this question.
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Q137
Open questionWhat will be the class of the vector if you concatenate a number and NA?
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Q138
Open questionWhat will be the output of the following R code snippet?
> f <- function(a, b) {
+ a^2
+ }
> f(2)Select an option to see the answer and solution.
Q139
Open question. . . . . . . . function is preferred over sapply as vapply allows the programmer to specific the output type.
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Q140
Open questionThe line of code in R language should begin with a . . . . . . . .
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