
Tidyverse Quiz
Authored by Priom Saha
Mathematics
University
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8 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
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
2.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which of the following functions is part of the Tidyverse?
Lattice
reshape2
ggplot2
tapply
3.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
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
4.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Which function works on the columns in a dataframe?
A) filter()
B) select()
C) arrange()
D) summarize()
5.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
In a dataframe, which operator is used to filter rows based on multiple conditions combined with "or"?
A) &
B) |
C) %
D) :
6.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
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
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
How do you check the structure of a dataframe in Tidyverse?
A) str()
B) glimpse()
C) head()
D) summary()
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