Data Visualization Using R MCQs Solution | TCS Fresco Play | Fresco Play | TCS

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Data Visualization Using R MCQs Solution | TCS Fresco Play | Fresco Play | TCS


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1. graphics,ggplot2 packages qualify for ___

Visualization Packages


2. Scatterplot Matrix is an example of __ type of visualization.

Multivariate


3. Which command in R, lists the available Datasets in R

data()


4. Title of the plot is provided by the variable

main


5. In the plot, to add label to the horizontal axis the variable to be configured is

xlab()


6. Histograms , Density Plots are examples of which type of visualization?

Univariate


7. How can we find the different parameters available ?

par()


8. Histogram is mainly used as visual representation of _

distribution


9. Which parameter in R helps to decide the number of bins which we want to manually override?

breaks


10. Which parameter decides the line type & plot symbol respectively?

Ich & pty


12. In case of the plot, which parameter decides whether the plot should be line or points or both?


13. The vertical axis label is provided by the parameter

ylab


14. To reset the grid to normal layout, after displaying multiple charts in single view could be obtained by

par(mfcol(1,1))


15. Which parameter could be used to convert stacked barplot into grouped bar plot?

beside=TRUE


16. If one would like to visualize 6 graphs in single view with graphs scaling in row wise fashion (2 rows)

par(mfrow=c(2,3))


17. Which parameter is helpful to swap the chart from x-axis to y-axis?

horiz=true


18. Barchart represents visual display of of category of categorical variable

frequency


19. Customizing the way your graphs could be arranged can be configured using _

layout()


20. Which argument helps in changing the size of plotting characters?

SIZE


21. Stratified boxplots are useful for examining the relationship between a categorical variable and a numeric variable.

True


22. col.main=4, will change size of the font ?

False


23. Which plot would be applicable for summarizing the value of numeric variable

Boxplot


24. Changing the font size of the axis labels could be accomplished using the following font


25. Which parameter removed the X & Y axis

axes=F


26. If in the Notched boxplot does not overlap, it means___

Medians do not overlap


27. Which command allows to place the text within the graph?

text


28. Which text feature allows the text to written along the margin of the graph?

mtext


29. Which of this is limitation of lattice plots?

All options


30. Lattice package supports the generation of trellis graphs (graphs that display a variable or the relationship between variables, conditioned on one or more other variables)

True


31. In lattice, ~x|A refers to

display numeric variable x for each level of factor A


32. In lattice,y~x | A*B refers to

Display the relationship between numeric variables y and x separately for every combination of factor A and B levels


33. Using ggplot2 for multifaceted diagram, the deciding variable on the number of rows or columns is

.(decimal)


34. ggplot2 requires the data to be in

dateframe format


35. Aesthetics in ggplot2 refers to

size,shape,color


36. The grey zone around the geom("smooth") line refers to

95% confidence


37. In multifaceted plot, how many columns will be formed when facets is mentioned as facets=.~drv

depends on drv


38. Geometric (geom) in ggplot2 refers to

points,lines


39. In multifaceted plot, how many columns will be formed when facets is mentioned as facets=drv~.

always 1 column


40. Factors represent the subset of the data and they should be properly labelled

True


41. In multifaceted plot, how many rows will be formed when facets is mentioned as facets=.~drv

always 1 row


42. What does gg in ggplot2 refer to

Grammar of Graphics


43. In multifaceted plot, how many rows will be formed when facets is mentioned as facets=drv~.

depends on drv


44. ggplot2 allows to add features layer by layer

True


45. In ggplot2, which function decides the object printing ____

geom.point()


46. The functions which assist in labelling of the functions is _

all options


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