Tidyverse Quiz

What is the Tidyverse?

• • A) A collection of base R functions

• • B) A collection of R packages designed for data manipulation and visualization

• • C) A visualization library in Python

• • D) A machine learning library in R

Which of the following functions is part of the Tidyverse?

• • Lattice

• reshape2

• • ggplot2

• tapply

What does the function mutate() in Tidyverse do?

• • A) Filters rows based on a condition

• • B) Reorders the rows of a dataframe

• • C) Creates new variables or modifies existing ones

• • D) Groups data by a variable

Which function works on the columns in a dataframe?

• • A) filter()

• • B) select()

• • C) arrange()

• • D) summarize()

In a dataframe, which operator is used to filter rows based on multiple conditions combined with "or"?

• • A) &

• • B) |

• • C) %

• • D) :

What is the purpose of the group_by() function in the dplyr package?

• • A) To create new variables

• • B) To sort the dataframe by a specific column

• • C) To change the scope of subsequent functions to operate at group levels

• • D) To perform arithmetic operations

How do you check the structure of a dataframe in Tidyverse?

• • A) str()

• • B) glimpse()

• • C) head()

• • D) summary()

Which of the following is not an advantage of using tibble in Tidyverse over data.frame?

• • A) Better printing of results

• • B) Handling large datasets more efficiently

• • C) Better compatibility with non-rectangular data structures

• • D) Better handling of list-columns