# Refer to Exercise 12.12. In the plot of the data, airport 20 had a much larger revenue than any…

Refer to Exercise 12.12. In the plot of the data, airport 20 had a much larger revenue than any of the other 21 airports.

a. Replot the three scatterplots with the data from airport 20 deleted. Does there appear to be any relationship among revenue and the two explanatory variables in this data set?

b. Fit a first-order regression model relating revenue to distance and population size. Comment on the quality of the fit of the model to the data. Is revenue related to distance from hub and population size once airport 20 is deleted from the data?

c. What conclusions can be inferred from parts (a) and (b) about the importance of plotting the data and not just running models through a software program?

Exercise 12.12

A regional airline transfers passengers from small airports to a larger regional hub airport. The airline’s data analyst was assigned to estimate the revenue (in thousands of dollars) generated by each of the 22 small airports based on two variables: the distance from each airport (in miles) to the hub and the population (in hundreds) of the cities in which each of the 22 airports is located. The data is given in the following table.

a. Produce three scatterplots: revenue versus distance, revenue versus population, and distance versus population.

b. For the 22 airports, is there a strong correlation between airport distance from the regional hub and city population?

c. Does there appear to a problem with high leverage points? Justify your answer.

d. Fit a first-order regression model relating revenue to distance and population size. Comment on the quality of the fit of the model to the data. e. Do the two estimated slopes appear to have the appropriate sign? If not, explain why.

Calculate the price
Pages (550 words)
\$0.00
*Price with a welcome 15% discount applied.
Pro tip: If you want to save more money and pay the lowest price, you need to set a more extended deadline.
We know how difficult it is to be a student these days. That's why our prices are one of the most affordable on the market, and there are no hidden fees.

Instead, we offer bonuses, discounts, and free services to make your experience outstanding.
How it works
Receive a 100% original paper that will pass Turnitin from a top essay writing service
step 1
Fill out the order form and provide paper details. You can even attach screenshots or add additional instructions later. If something is not clear or missing, the writer will contact you for clarification.
Pro service tips
How to get the most out of your experience with My Study Writers
One writer throughout the entire course
If you like the writer, you can hire them again. Just copy & paste their ID on the order form ("Preferred Writer's ID" field). This way, your vocabulary will be uniform, and the writer will be aware of your needs.
The same paper from different writers
You can order essay or any other work from two different writers to choose the best one or give another version to a friend. This can be done through the add-on "Same paper from another writer."
Copy of sources used by the writer
Our college essay writers work with ScienceDirect and other databases. They can send you articles or materials used in PDF or through screenshots. Just tick the "Copy of sources" field on the order form.
Testimonials
See why 20k+ students have chosen us as their sole writing assistance provider
Check out the latest reviews and opinions submitted by real customers worldwide and make an informed decision.
Economics
Nice work
Customer 453185, May 21st, 2022
English 101
Thank you for this excellent analysis of the Alchemist.
Customer 453213, June 15th, 2022
Education
Very fast response and did a excellent job.
Customer 453201, May 31st, 2022
Psychology
quick and before due date/time.
Customer 453027, January 29th, 2022
Amazing!
Customer 452985, November 11th, 2021
Humanities
Thank youuuu
Customer 452729, May 30th, 2021
awesome work
Customer 453201, June 15th, 2022
English 101
thank you for the excellent work
Customer 452883, October 29th, 2021
Social Work and Human Services
Although it took 2 revisions I am satisfied but I did receive it late because of that.
Customer 452603, March 25th, 2021
History
Looks great and appreciate the help.
Customer 452675, April 26th, 2021
Communications
Thank you so much for your attention to this assignment and timeliness.
Customer 453111, November 12th, 2022
Psychology