What will be the output of the following R code?
> x <- rnorm(10)
> summary(x)
> x <- rnorm(10)
> summary(x)A. [1] 0.01874617 -0.18425254 -1.37133055 -0.59916772 0.29454513
[6] 0.38979430 -1.20807618 -0.36367602 -1.62667268 -0.25647839
B. [1] 22.20356 21.51156 19.52353 21.97489 21.48278 20.17869 18.09011
[8] 19.60970 21.85104 20.96596
C. Min. 1st Qu. Median Mean 3rd Qu. Max.
18.09 19.75 21.22 20.74 21.77 22.20
D. Error
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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