Find the output of the following code on the R Interpreter.

months <- c{"JAN"."FEB"."MARCH"."APRIL"."MAY"."JUNE"."JULY")

output <- months[c(1.TRUE.4.TRUE.5)]

print(output)

R uses the function. barplotii. to create bar charts. The basic syntax to create a bar chart In R is:

barplot(H. xlab. yiab. main. namesarg. col)

Which of the following options are correct?

Which of the given tasks are performed by the following code?

library("rjso")

result <- fromJSON(lile = '"data.json"]

print(result)

What will be the output of the following program on R interpreter?

v <- LETTERS[9.55:15.86]

for ( i in v)

{

if (i = "0")(

next

]

print(i)

}

What will be the output of the following program on R Interpreter?

v <- 3+16i

printiclass()

v <— 3"46

print[class[v])

v <~ 3l+16

printiclassMJ

v <- 316

print(class[v))

In R programming language. the arguments of a function can be partially matched using the following checks:

Check for a partial match.

Check for a positional match.

Check for exact match for a named argument

Which of the following Is the correct sequence of checks followed by the function to partially match the supplied arguments?

What will be the output of the following code on the R Interpreter?

print(seq(7,12. by = 0.68))

Following is a function definition in R programming language:

dummy.function <- function(a.b.c) [

result -=- a ‘+ b ' c

print(result)

]

Which of the following function calls will give the output: 41895?

What will be the output of the following program on R interpreter?

OUTPUTMATRIX = matrix( c("1","2"."3"."4"."5"."6"."7"."8"."9"."10"."11","12"). nrow = 4, ncol = 3. byrow = FALSE)

print(OUTPUTMATRlX)

Following Is a function def‌inition in R programming language:

foo.function <- function(a,b)

{

print{a)

print{b‘b)

}

Which of the following function calls will give an error?

What will be the output of the following program on R interpreter?

temp <- c("Comp|ex","Simple")

cnt <- 10

repeat

[

print(temp)

cnt <— cnt-1

if(cnt < 6.5) {

break

1

}

Following is a code snippet to be used to draw a boxplot in R:

boxplot(mpg "‘ Cyl, data = mtcars,

xiab = "Number of Cylinders",

ylab = Miles Per Gallon“,

main = "Mileage Data",

notch = TRUE,

varwldth = FALSE.

col = ched","Biue","Green"],

names = c("High","Medium","Low")

Which of the following options is NOT correct?

What wlll be the Output of the following program on R Interpreter?

v <- LETTERS[5:1]

{or (i in v)

{

print(i)

}

Find the error in following code snippet

foodata <- data.frame(

empid = C(11:15),

empname = c("EMP2"."EMP3"."EMP4","EMP5"),

"" = c(100,200,300,400,500},

empjoindate = asDatetcf'2017—01-01", '2017~02~01", '2017-03-01‘, "2017-0401”,"2017~05-01‘)),

stringsAsFactors = FALSE

)

print(foo.data)

Following is a code snippet executed on R interpreter:

sales <- c(10,20.30.40.50)

months <- c{"JAN".“FEB"."MARCH"."APRIL"."MAY")

png(file = "months_sales.png")

barplot(sales,names.arg = months.xlab = "Month".ylab = "Sales",col = "Red",main = "Sales Chart“,border =

"Black")

What does this code do?

Following is a function def‌inition in R programming language:

foo.function <- function(a =1, b = 2. c = 3)

{result <- a ’ b+ c

print(result)

}

What will be the output of the following program on R Interpreter?

foo <- c(‘Testing‘.’while statement‘)

cnt <- 7

while [cnt<11.64)

[

printltoo)

cnt = count + 1

]

What will be the output ofthe following program on R interpreter?

foo <- C("Testing","loop")

count <— 5

repeat {

print(foo)

count <- count +1

if(count > 8.34)[

break

}

]

What will be the output of the following R code?

car_colors <~ ci‘black',‘red','blue'.'blue'.'-.vltite'.‘metallic',‘red')

tactor_cars <~ Iactor(car_colors)

Print (factor_cars)

print(nlevels(factot_cats))

The middle-most value in a data series is called the median. The median() function is used. in R. to calculate this value. Which of the following are the valid parameters in the median() function?

R has four in-built functlons to generate a normal distributlon. Which of the following functions takes the probability value and gives a number. whose cumulative value matches the probability value?

in R language, in order to calculate the mean of a given set of values, the mean() function is used. Following is the basic syntax for the same:

mean(x, trim = O, na.rm = FALSE, ...)

Which of the following parameters is used to remove the missing values from the input vector?

R has four in-built functions to generate a normal distribution. Which of the following functions gives the height of the probability distribution at each point for a given mean and standard deviation?

You have an Excel workbook with the name "data.xlsx". it has 3 sheets. Which of the following options will load the Excel workbook and read the second sheet?

What will be the output of the following program on R interpreter?

custom_cub_function <- function()

i

for(i in 1:4)

{

i

cubeoutput <- i"3

print[cubeoutput)

}

What will be the output of the following program on R interpreter?

foo <- 'red'

switch(foo, fruit = "apple", vegetable = “chilli‘. "Exception')

What will be the output of the following program on R interpreter?

tempString <- "Hello.World!"

print (tempString)

tempString

Lst <- list(name="Fred", wife="Mary", no.children=3, child.ages=c(4,7,9)) What is Lst[[1]]?

Lst <- list(name="Fred", wife="Mary", no.children=3, child.ages=c(4,7,9)) What is the value of Lst[[4]][2]?

Using the __ the BY variable should be in the list?

What would be the output of the following code ? > x <- 1:3 > names(x)

Which function is used to convert a list ‘a’ to a vector?

gzfile opens a connection to a file compressed with _____?

Melt is used to convert wide data to _____ data?

Point out the correct statement.

What is the output of the following commands? > x <- c(1:3, NA) > y <- is.na(x) > y

What is the correct way of converting a factor to integer in R?

Point out the correct statement.

Which of the following is lattice command for producing a scatterplot ?

What is the output of the following command? > 2*1:10

Which function gives the structure of a data frame “df”?

Functions are defined using the _____ directive and are stored as R objects.

The ____ function takes an arbitrary number of arguments and concatenates them one by one into character strings?

What is the output of the following commands? > x <- c(1, 2) > y <- c(4, 5) > pmax(x, y)

What is the output of the following commands? > x <- c(1, 2) > y <- c(4, 5) > pmax(x, y)

What is the output of the following commands? > x <- c(0, 1, 2) > y <- x != 0 > y

What is the output of the following expression? > c(list(1), "1")

The following vector represents the country of each of 10 freelancers on UpWork: > country <- c("UK", "Vietnam", "USA", "Russia", "Russia", "Egypt", "UK", "Vietnam", "Egypt", "USA") The following vector represents the hourly rate of the same 10 freelancers: > hourlyRate <- c(10, 20, 30, 40, 50, 50 ,40 ,30 ,20 ,10) Which R command will show the average rate for each country?

What would be the output of the following code ? > m <- matrix(1:4, nrow = 2, ncol = 2) > dimnames(m) <- list(c("a", "b"), c("c", "d")) > m

uniPlot uniforms and customizes plots of packages _ , __ and lattice?

While creating a data frame, the variables must have __ length?

What is the result of the following R code? > a <- array(0:7, dim=c(2,2,2)) > b<-a%*%a > b[1]

What is the output of the following code? > x <- outer(1:2, 1:2, FUN = "*") > x

Error is an indication that a fatal problem has occurred and __ of the function stops?

Point out the correct statement.

Which of the following is lattice command for producing boxplots ?

What is the output of the following code? > x <- c(0, 1, 2, 3, 4, 5, 6, 7) > dim(x) <- c(2,2,2) > x[1,1,2]

How do you obtain the transpose of a matrix m in R?

What is the result of the following R code? > x <- array(0:7, dim=c(2,2,2)) > i <- array(c(1:2, 4:3), dim=c(2,2)) > x[i]

Data frames can be converted to a matrix by calling data.__

How can you create scatterplot matrices?

What is the result of the following R code? > x <- array(0:7, dim=c(2,4)) > i <- array(c(1:2, 4:3), dim=c(2,2)) > x[i]

What is the result of the following code? > a <- array(c(0:1, 1:0), dim=c(2,2)) > a %*% a

What is the result of the following R code? > x <- c(0, 1, 2, 3, 4, 5, 6, 7) > dim(x) <- c(2,2,2) > x[,2,]

Let v be a vector. What is the correct way of creating a factor from v?

Which of the following determines the least-squares regression line ?

What is the difference between matrix and dataframe?

R is easily extensible through functions and ____?

How do you create log linear models in R language?

What is the factor variable in R language?

Which statement makes a mosaic plot ?

What are the row names of the data frame?

How can you merge two data frames in R?