Explore topic-wise MCQs in R Programming.

This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your R Programming knowledge and support exam preparation. Choose a topic below to get started.

1.

__________ can contain heterogeneous inputs.

A. Matrix
B. Data Frames
C. Matrix and Data Frames
D. Does not exists
Answer» C. Matrix and Data Frames
Discussion
2.

Which package in R supports the exploratory analysis of genomic data?

A. Adegenat
B. Adegenet
C. Adegnet
D. Adezenet
Answer» C. Adegnet
Discussion
3.

How is a Data object represented internally in R language?

A. unclass (as.time ( 2018-12-28 ))
B. unclass (as.dat ( 2018-12-28 ))
C. unclass (as.D (2018-12-28))
D. unclass (as.Date ( 2018-12-28 ))
Answer» E.
Discussion
4.

What will be the output of log (-5.8) when executed on R console?

A. NAN
B. NA
C. Error
D. 0.213
Answer» B. NA
Discussion
5.

MapReduce jobs submitted from either Oozie, Pig or Hive can be used to encode, improve and sample the data sets from _________ into R.

A. HDLS
B. HDFS
C. HDLSV
D. HSSLV
Answer» C. HDLSV
Discussion
6.

___________ can be used for storing the data for long-term.

A. HDLS
B. HDFS
C. HDLSV
D. HSSLV
Answer» C. HDLSV
Discussion
7.

What is the command used to store R objects in a file?

A. save (x, file= x.Rdata )
B. save (x, file=x.Rdata)
C. save (x, file= x.Rdata );
D. save (x, file= x.data )
Answer» B. save (x, file=x.Rdata)
Discussion
8.

What are the different types of sorting algorithms available in R language?

A. Bubble
B. Selection
C. Merge
D. All sorts
Answer» E.
Discussion
9.

In the base graphics system, which function is used to add elements to a plot?

A. Boxplot()
B. Text()
C. Boxplot() or Text()
D. Treat()
Answer» D. Treat()
Discussion
10.

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

A. Table
B. Data, dplyr
C. Data.table
D. Dplyr.table
Answer» D. Dplyr.table
Discussion