Regress arr_delay on log(distance), seats, and carrier. Which carrier is the worst carrier (namely, has the longest delay time)

INSTRUCTIONS TO CANDIDATES

ANSWER ALL QUESTIONS

• Import the package nycflights13. Merge the flights and planes data into a new data frame. Answer the following questions by the merged data.

• Regress arr_delay on log(distance), seats, and origin. (1) Which airport is the base cateory? (2) explain the meaning of the coef. of log(distance), and (3) is the coef. of seats significantly different from -0.5 under the 5% significance level?

• Regress arr_delay on log(distance), seats, and carrier. Which carrier is the worst carrier (namely, has the longest delay time)?

• Select only two carriers: AA and DL. Randomly sample 100 observations. Use set.seed(777) to fix the random seed.

• Creat the scatterplot of arr_delay (y-axis) and dep_delay (x-axis) based on the random sample from the previous step. (1) Color the points by the carrier. (2) Add a single regression line. (3) Label the destination. (4) The size of the points depends on the variable seat. (5) Apply the Wall Street Journal theme.

Attachments:

Related Questions

. The fundamental operations of create, read, update, and delete (CRUD) in either Python or Java

CS 340 Milestone One Guidelines and Rubric  Overview: For this assignment, you will implement the fundamental operations of create, read, update,

. Develop a program to emulate a purchase transaction at a retail store. This  program will have two classes, a LineItem class and a Transaction class

Retail Transaction Programming Project  Project Requirements:  Develop a program to emulate a purchase transaction at a retail store. This

. The following program contains five errors. Identify the errors and fix them

7COM1028   Secure Systems Programming   Referral Coursework: Secure

. Accepts the following from a user: Item Name Item Quantity Item Price Allows the user to create a file to store the sales receipt contents

Create a GUI program that:Accepts the following from a user:Item NameItem QuantityItem PriceAllows the user to create a file to store the sales receip

. The final project will encompass developing a web service using a software stack and implementing an industry-standard interface. Regardless of whether you choose to pursue application development goals as a pure developer or as a software engineer

CS 340 Final Project Guidelines and Rubric  Overview The final project will encompass developing a web service using a software stack and impleme