Fran Trejo PAD 6833 Homework 2

Here, I imported the cars data. I named the data set “cars”.

wd<-getwd()
cars<-read.csv("cars_data.csv")

Here, I got the column names.

colnames(cars)

##  [1] "X"    "mpg"  "cyl"  "disp" "hp"   "drat" "wt"   "qsec" "vs"   "am"  
## [11] "gear" "carb"

3. What is the average (mean()) mpg for all cars?

mean(cars$mpg)

## [1] 20.09062

4. What is the minimum mpg for all cars?

min(cars$mpg)

## [1] 10.4

5. What is the maximum mpg for all cars?

max(cars$mpg)

## [1] 33.9

6. How many cars are there in the dataset? (Hint: length() of mpg)

length(cars$mpg)

## [1] 32