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R Questions Set 46:

Quiz Mode

What is the shortform of Threshold logical unit?

THL

THU

TLU

TLO

Solution:

Which of the following provides needed string operators in R

str

forcast

stringr

Solution:

What is the output of the code: print "star".reverse

rats

astr

satr

None of these

Solution:

The ________ package provides needed string operators in R.

str

forecast

sqldf

stringr

Solution:

Which of the following add new variables/columns or transform existing variables?

mutate

arrange

apped

add

Solution:

Which of the following functions is used to view a dataset in a spreadsheet-type format?

Disp()

Seq()

View()

Im()

Solution:

Which package can be integrated with dplyr for working with large, fast tables?

Table

Data.table

Data, dplyr

Dplyr.table

Solution:

Which of the following functions can be used to count the number of good cases when doing pairwise analysis?

count.pairwise

count() +

anova.para()

count.poly()

Solution:

Which of the following functions is a kind of 'constructor function' that can be used to construct other functions?

keep.pow()

keep.power()

make.power()

make.pow()

Solution:

Which of the following functions can be used to read CSV files in R?

read.table(filename, header=TRUE, sep=',')

read.csv(filename, header=TRUE, sep=',')

read.tab(filename, header=TRUE, sep=',')

read.tab(filename, header=FALSE, sep=',')

R Questions Set 46:

What is the shortform of Threshold logical unit?

Solution:

Which of the following provides needed string operators in R

Solution:

What is the output of the code: print "star".reverse

Solution:

The ________ package provides needed string operators in R.

Solution:

Which of the following add new variables/columns or transform existing variables?

Solution:

Which of the following functions is used to view a dataset in a spreadsheet-type format?

Solution:

Which package can be integrated with dplyr for working with large, fast tables?

Solution:

Which of the following functions can be used to count the number of good cases when doing pairwise analysis?

Solution:

Which of the following functions is a kind of 'constructor function' that can be used to construct other functions?

Solution:

Which of the following functions can be used to read CSV files in R?

Solution:

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