nycflights13 For this assignment, you must name your R file nycflights13.R For all questions you should load tidyverse and nycflights13. You should not need to use any other libraries. Load tidyverse...

nycflights13

For this assignment, you must name your R file nycflights13.R

• For all questions you should load tidyverse and nycflights13.  You should not need to use any other libraries.




• Load tidyverse with suppressPackageStartupMessages(library(tidyverse))


• 
  You can not attempt to install packages in CodeGrade
  - I’ve pre-installed them.




• Round all float/dbl values to two decimal places.




• If your rounding does not work the way you expect, convert the tibble to a dataframe by using as.data.frame()




• All statistics should be run with variables in the order I state




• E.g., “Run a regression predicting mileage from mpg, make, and type” would be:

        lm(mileage ~ mpg + make + type...)

1. What is the mean distance of flights for each of the carriers AA, EV, and FL?