Data Manipulation with dplyr MCQ question and answer with solution | R Programming MCQs

A. update_element update contents of a theme

B. Use theme_update_element to modify a small number of elements of the current theme or use theme_set to completely override it

C. theme_bw is theme with grey background and white gridlines

D. is.rel reports whether x is a theme object

A. geom_density2

B. geom_density

C. aes_sdensity

D. geom_contour

A. discrete_scale

B. ggpcp

C. ggfluctuation

D. ggmissing

A. ggmissplot

B. printplot

C. print.ggplot

D. ggplot

A. gather() makes "wide" data longer

B. Two functions are present for tidy data

C. separate() makes "wide" data longer

D. spread() function takes multiple columns

A. C

B. C++

C. Java

D. PHP

A. 1

B. 2

C. 3

D. 4

A. A socket connection

B. A Microsoft Word document

C. A PDF file

D. A file folder

A. [1] 7 0 1 1 2 1 1 4 1 2

B. [1] 0 8 1 1 2 1 1 4 1 2

C. [1] 0 0 1 1 2 1 1 4 1 2

D. [1] 0 0 0 0 0 0 0 1 4 1 2

A. system.timedeb()

B. system.time()

C. system.datetime()

D. system.deb()