Speed_mpg: Fuel economy as a function of vehicle speed
In dtkaplan/SDSdata: Data and utilities for the book Statistics for Data Science

Speed_mpg

R Documentation

Fuel economy as a function of vehicle speed

Description

Fuel economy of a 2009 Toyota RAV-4 driving on Interstate Highway 40 in Texas in early March, 2019. The car was held steady at each speed using the car's "cruise control." The highway had some gentle ups and downs. All of the data at one speed were collected consecutively, approximate every 4 seconds. Data was recorded only after the car had been held steadily at speed for at least 15 seconds.

Usage

data(Speed_mpg)

Format

A data.frame object with one row for each observation

order measurements were collected consecutively at each speed. The entry with order 1 was the first measurement, order 2 was the second, and so on.
speed the speed (miles per hour) at which the vehicle was travelling. Measured from the car's speedometer.
mpg "Instantaneous" fuel economy (miles per gallon) according to the car's dashboard reading. In fact, the reading averages over approximately a second of travel.