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

A. R comes with a set of pseudo-random number generators

B. Random number generators cannot be used to model random inputs

C. Statistical procedure does not require random number generation

D. For each probability distribution there are typically three functions

A. Plots that may need to be resized

B. Plots that require animation or interactivity

C. Plots that are not scaled to a specific resolution

D. Scatterplots with many many points

A. elapsed

B. user

C. response

D. monitor

A. pivot

B. unpivot

C. cast

D. order

A. tidyr and dplyr packages do not make use of the pipe operator

B. tidyr does less than reshape2

C. tidyr provides ability to string multiple functions together by incorporating %

D. tidyr does greater than reshape2

A. qplot_ggplot

B. ggplot.data.frame

C. ggfluctuation

D. ggmissplot

A. a plotting object like point, line, or other shape

B. a method for making conditioning plots

C. a method for mapping data to attributes like color and size

D. a statistical transformation

A. rename

B. filter

C. set

D. subset

A. tidy

B. tidyr

C. tidyneat

D. tidynr

A. dnorm

B. rnorm

C. pnorm

D. rpois