R Programming Mock Test 8

10%

Question 1 of 10

1. Bitmapped file formats can be most useful for ____________

Scatterplots with many many points

Plots that are not scaled to a specific resolution

Plots that require animation or interactivity

Plots that may need to be resized

Question 1 of 10

Question 2 of 10

2. How many functions exist for tidying the data?

two

four

one

three

Question 2 of 10

Question 3 of 10

3. Which of the following function is used for plotting histogram?

histog()

histg()

histo()

hist()

Question 3 of 10

Question 4 of 10

4. Which of the following draws nothing?

geom_contour

geom_blank

geom_bin2d

geom

Question 4 of 10

Question 5 of 10

5. ________ is used for relative sizing of theme elements.

relative

rel

size

timrinterval

Question 5 of 10

Question 6 of 10

6. Spread function is known as ___________ in spreadsheets.

order

unpivot

pivot

cast

Question 6 of 10

Question 7 of 10

7. Which of the following is an example of a vector graphics device in R?

PNG

SVG

GIF

JPEG

Question 7 of 10

Question 8 of 10

8. Which of the following statement is normal distribution?

dnorm(x, mean=0, sd=1, log = FALSE)

qnorm(p, mean=0, sd=1, lower.tail = TRUE, log.p = FALSE)

rnorm(n, mean=0, sd=1)

pnorm(q, mean=0, sd=1, lower.tail = TRUE, log.p = FALSE)

Question 8 of 10

Question 9 of 10

9. Point out the correct statement?

autoplotgraph is used to complete ggplot appropriate to a particular data type

auto_element wraps up a projection of summary functions

ggplot.data create a new ggplot plot from a data frame

aes_sdensity display a smooth density estimate

Question 9 of 10

Question 10 of 10

10. ___________ is used to determine what is plotted for each group.

panel.expose

panel.superpose

panel.impose

panel.depose

Question 10 of 10