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R Questions Set 42:

Quiz Mode

What is the length of the vector `b <- 2:7`?

Solution:

What is an alternative way of defining margins?

Char

Margin

Mar

Nar

Solution:

The standard font determines the width of the text lines in the

Function

Package

Library

Margin

Solution:

What is the primary purpose of R Commander?

None of these

To use data

To import data

To export data

Solution:

Which of the following functions actually fits the linear model?

lm.time()

lm.date()

lm.fit()

lm.interval()

Solution:

Which of the following will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)).

Seq(10)

Seq(15)

Seq(12)

Seq(9)

Solution:

Which of the following code creates an n-item vector of random normal deviates?

x1 <- c(snorm(n))

x1 <- c(pnorm(n))

x1 <- c(rnorm(n))

x1 >- c(norm(n))

Solution:

Which of the following R functions can be used to display the names of (most of) the objects currently stored in the R environment?

object()

objects()

list()

class()

Solution:

Which of the following statements would read the file "abc.txt"?

read.data <- read.table("abc.txt")

data <- read.data("abc.txt")

data <- data("abc.txt")

data <- read.table("abc.txt")

Solution:

Which of the following statements about character quantities and character vectors in R is correct?

Subsets of the elements of a vector may be selected by appending to the name of the vector an index vector in square brackets

Character vectors may be concatenated into a vector by the c() function

All of the above

Character strings are entered using either matching double (") or single (') quotes

R Questions Set 42:

What is the length of the vector `b <- 2:7`?

Solution:

What is an alternative way of defining margins?

Solution:

The standard font determines the width of the text lines in the

Solution:

What is the primary purpose of R Commander?

Solution:

Which of the following functions actually fits the linear model?

Solution:

Which of the following will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)).

Solution:

Which of the following code creates an n-item vector of random normal deviates?

Solution:

Which of the following R functions can be used to display the names of (most of) the objects currently stored in the R environment?

Solution:

Which of the following statements would read the file "abc.txt"?

Solution:

Which of the following statements about character quantities and character vectors in R is correct?

Solution:

Related Question Sets:

Related Topics:

R Questions Set 42:

What is the length of the vector b <- 2:7?

Solution:

What is an alternative way of defining margins?

Solution:

The standard font determines the width of the text lines in the

Solution:

What is the primary purpose of R Commander?

Solution:

Which of the following functions actually fits the linear model?

Solution:

Which of the following will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)).

Solution:

Which of the following code creates an n-item vector of random normal deviates?

Solution:

Which of the following R functions can be used to display the names of (most of) the objects currently stored in the R environment?

Solution:

Which of the following statements would read the file "abc.txt"?

Solution:

Which of the following statements about character quantities and character vectors in R is correct?

Solution:

Related Question Sets:

Related Topics:

What is the length of the vector `b <- 2:7`?