cars

The data are quarter-mile acceleration time in seconds and
fuel consumption in miles per (US) gallon  for 32 cars tested by the US
<em>Motor Trend</em> magazine in 1974.  Nine explanatory variables are given: shape of engine,
number of cylinders, transmission type, number of gears, engine displacement in cubic
inches, horsepower, number of carburettor barrels, final drive ratio, and weight of the car in thousands of pounds.


datasets

This package accompanies Aitkin et al, Statistical
Modelling in R, OUP, 2009. The package contains some functions
and datasets used in the text.

Ross Darnell

SMIR

Companion to Statistical Modelling in R

cars function

A data.frame of 32 obs. of 11 variables:
  <table><tr><td>
    [,1] </td>
<td>  s   </td>
</tr><tr><td> integer, shape of engine (straight = 1, vee = 0)</td>
<td>
  [,2] </td>
</tr><tr><td> c   </td>
<td> integer, number of cylinders</td>
</tr><tr><td>
  [,3] </td>
<td>   t   </td>
</tr><tr><td> integer, transmission type, (automatic = 0,
  manual = 1)</td>
<td>
  [,4] </td>
</tr><tr><td>   g   </td>
<td> integer, number of gears</td>
</tr><tr><td>
  [,5] </td>
<td>   disp</td>
</tr><tr><td> numeric, engine displacement in cubic inches</td>
<td>
  [,6] </td>
</tr><tr><td>   hp  </td>
<td> integer, horsepower</td>
</tr><tr><td>
  [,7] </td>
<td>   cb  </td>
</tr><tr><td> integer, number of carburettors</td>
<td>
  [,8] </td>
</tr><tr><td>   drat</td>
<td> numeric, final drive ratio</td>
</tr><tr><td>
  [,9] </td>
<td>   wt  </td>
</tr><tr><td> numeric, weight of car in thousands of pounds</td>
<td>
  [,10] </td>
</tr><tr><td>   qmt </td>
<td> numeric, quarter-mile acceleration time in seconds</td>
</tr><tr><td>
  [,11] </td>
<td>   mpg </td>
</tr><tr><td> numeric, fuel consumption in miles per gallon</td>
<td>
  [,12] </td>
</tr><tr><td> model </td>
<td> Factor w/ 32 levels "AMC Javelin"...:18 19 ...</td>
</tr></table>

Format

Henderson, H.V. and Velleman, P.F. (1981), "Building multiple
  regression models interactively", <em>Biometrics</em>, <b>37</b>, 391--411.

cars: Performance data for cars from Motor Trend magazine

Description

Usage

Arguments

Format

Source

[,1]	s
integer, shape of engine (straight = 1, vee = 0)	[,2]
c	integer, number of cylinders
[,3]	t
integer, transmission type, (automatic = 0, manual = 1)	[,4]
g	integer, number of gears
[,5]	disp
numeric, engine displacement in cubic inches	[,6]
hp	integer, horsepower
[,7]	cb
integer, number of carburettors	[,8]
drat	numeric, final drive ratio
[,9]	wt
numeric, weight of car in thousands of pounds	[,10]
qmt	numeric, quarter-mile acceleration time in seconds
[,11]	mpg
numeric, fuel consumption in miles per gallon	[,12]
model	Factor w/ 32 levels "AMC Javelin"...:18 19 ...