Which of the following is true about the base plotting system?
A. Margins and spacings are adjusted automatically depending on the type of plot and the data
B. Plots are typically created with a single function call
C. Plots are created and annotated with separate functions
D. The system is most useful for conditioning plots
Answer: Option C
This Question Belongs to R Programming >> Data Manipulation With Dplyr
In dplyr, what function is used to select specific columns from a data frame?
A. select_cols()
B. choose_cols()
C. select()
D. pick()
How do you filter rows in a dplyr data frame based on a specific condition using filter()?
A. filter_rows()
B. row_filter()
C. filter_conditions()
D. filter()
In dplyr, what does the arrange() function do?
A. Sorts the data frame in ascending order
B. Arranges the columns in a specified order
C. Orders the rows based on a specific column
D. Sorts the data frame in descending order
What function is used to create a new variable in a dplyr data frame based on existing variables?
A. create_var()
B. mutate()
C. new_variable()
D. add_column()
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