Introduction to R Programming MCQ question and answer with solution | R Programming MCQs

A. list(a = 1, b = "hello", c = TRUE)

B. c(1, "hello", TRUE)

C. data.frame(a = 1, b = "hello", c = TRUE)

D. matrix(c(1, "hello", TRUE), nrow = 1)

A. Median of a numeric vector

B. Mean of a numeric vector

C. Standard deviation of a numeric vector

D. Sum of a numeric vector

A. install.packages("package_name")

B. install.package("package_name")

C. install_cran_package("package_name")

D. add.package("package_name")

A. help(mean)

B. ?mean

C. info(mean)

D. get.help(mean)

A. Returns the number of elements in each list element

B. Computes the lengths of strings in a character vector

C. Calculates the length of a numeric vector

D. Counts the number of elements in a list

A. "Hello, World!"

B. 'Hello, World!'

C. c("Hello", "World")

D. char("Hello, World!")

A. Creates a contingency table

B. Displays the first few rows of a data frame

C. Produces a summary of data

D. Sorts a vector

A. data$Age

B. data[,"Age"]

C. data[["Age"]]

D. data.column("Age")

A. Displays the search path for loaded packages

B. Searches for a file in the working directory

C. Searches for a keyword in the help

D. Displays the search history

A. mean(vector)

B. calculate.mean(vector)

C. vector.mean(vector)

D. avg(vector)