R Online Quiz

Q 1 - Which one of the following is a lattice command for producing a scatterplot?

A. plot() B. xyplot() C. anova() D. lm()

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Answer is : Option B

Q 2 - What is the %*% operator used for in R language?

A. Integration B. Inter division C. Modulus D. Matrix multiplication

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Answer is : Option D

Q 3 - Which one of the given commands will split the plotting window into 4 X 3 windows and where the plots enter the window column-wise.

A. par(col=c(4,3)) B. par(mfrow=c(4,3)) C. par(mfcol=c(4,3)) D. par(split=c(4,3))

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Answer is : Option C

Q 4 - From the following language, the language which has a superficial similarity with R is ________________

A. C B. MATLAB C. SAS D. Python

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Answer is : Option A

Q 5 - Which is the extension of R programming?

A. .R B. .c C. .S D. .Rp

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Answer is : Option A

Q 6 - name = “Navin, Mr. Naresh J” The function which is used to split the given string into “Navin” “Mr. Naresh J”

A. stringsplit(name) B. charsplit(name,”[,]”) C. strsplit(name,”[.]”) D. strsplit(name,”[,]”)

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Answer is : Option D

Q 7 - Which one of the following is computed proportions from a contingency table?

A. prop.table() B. anova() C. par() D. mosaicplot()

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Answer is : Option A

Q 8 - Which of the given R code generate a sequence of integers from 1 to 10?

A. > for(i in 2:50) { + print("i") + } B. >for(i in 1:9) { + print(i) + } C. > for(i in 1:10) { + print(i) + } D. > for(i in 0:9) { + print(i) + }

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Answer is : Option C

Q 9 - What letter is used to create an integer variable?

A. H B. Z C. I D. L

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Answer is : Option D

Q 10 - The function which is used to convert lowercase to uppercase?

A. upper() B. toupper() C. upper() D. to_upper()

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Answer is : Option B

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