R Programming Questions and Answers – Visualizing Data – 1

This set of R Programming Language Multiple Choice Questions & Answers (MCQs) focuses on “Visualizing Data – 1”.

1. Which of the following method make vector of repeated values?
a) rep()
b) data()
c) view()
d) read()
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2. Which of the following finds the position of a quantile in a dataset?
a) quantile()
b) barplot()
c) barchart()
d) rep()
View Answer

3. Which of the following function cross-tabulate tables using formulas?
a) table
b) stem
c) xtabs
d) read
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4. Which of the following groups find the correlation matrix?
a) factor.model
b) col.max(x)
c) stem
d) which.max(x)
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5. which of the following statement make a mosaic plot?
a) histogram()
b) mosaicplot()
c) bar()
d) which.max(x)
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6. Which of the following compute proportions from a contingency table?
a) par()
b) prop.table()
c) anova()
d) mosaicplot()
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7. Which of the following is lattice command for producing a scatterplot?
a) plot()
b) lm()
c) xyplot()
d) anova()
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8. Which of the following builds empirical cumulative distribution function?
a) ecdf()
b) cum
c) cumsum
d) lm()
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9. Which of the following is used to view dataset in a spreadsheet-type format ?
a) Disp()
b) View()
c) Seq()
d) lm()
View Answer

10. ________ function carries out a chi-square test.
a) chisq.test()
b) t.test()
c) prop.test()
d) fisher.test()
View Answer

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