Podcast
Questions and Answers
Which func*on in the *dyverse is used to restrict to certain observations in the data?
Which func*on in the *dyverse is used to restrict to certain observations in the data?
Which func*on in the *dyverse is used to restrict to certain columns in the data?
Which func*on in the *dyverse is used to restrict to certain columns in the data?
What code would correctly construct a dataframe with average price per date from the Uber dataset?
What code would correctly construct a dataframe with average price per date from the Uber dataset?
If you want to calculate the total cost over time using the Uber dataset, which approach would you NOT use?
If you want to calculate the total cost over time using the Uber dataset, which approach would you NOT use?
Signup and view all the answers
Which function should you avoid using if you want to obtain the average cost per ride in the Uber dataset?
Which function should you avoid using if you want to obtain the average cost per ride in the Uber dataset?
Signup and view all the answers
Study Notes
Question 1
- To filter observations in 'tidyverse', use the
filter()
function.
Question 2
- To select columns, use
select()
.
Question 3
- The correct code to calculate the average cost per date is:
uber %>% group_by(date) %>% summarize(meancost=mean(cost))
. - This groups data by
date
and then calculates the mean cost (cost
) for each grouping (date
).
Question 4
- The provided code is missing. Therefore, I cannot determine the value of
start
after execution.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of the Tidyverse in R programming with this quiz. It covers essential functions like filter()
and select()
and includes a question on calculating averages using group_by()
and summarize()
. Perfect for students looking to reinforce their data manipulation skills!