Which of the following evaluate the Normal probability density (with a given mean/SD) at a point?
A. dnorm
B. rnorm
C. pnorm
D. rpois
Answer: Option A
This Question Belongs to R Programming >> Data Manipulation With Dplyr
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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
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What function is used to create a new variable in a dplyr data frame based on existing variables?
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