mtcars.mix: Motor Trend Cars Mixed Symbolic Dataset

In dataSDA: Datasets and Basic Statistics for Symbolic Data Analysis

Motor Trend Cars Mixed Symbolic Dataset

Description

Mixed symbolic dataset of 5 car groups from the mtcars data, with 7 interval-valued performance variables and 4 modal-valued categorical variables.

Usage

data(mtcars.mix)

Format

A symbolic data frame (symbolic_tbl) with 5 observations (car groups) and 11 variables:

• mpg: Interval-valued miles per gallon.

• cyl: Modal-valued number of cylinders.

• disp: Interval-valued displacement (cu.in.).

• hp: Interval-valued horsepower.

• drat: Interval-valued rear axle ratio.

• wt: Interval-valued weight (1000 lbs).

• qsec: Interval-valued quarter-mile time (seconds).

• vs: Modal-valued engine type (V/S).

• am: Modal-valued transmission type (auto/manual).

• gear: Modal-valued number of forward gears.

• carb: Modal-valued number of carburetors.

Metadata

Sample size (n)	5
Variables (p)	11
Subject area	Automotive
Symbolic format	Mixed (interval, modal)
Analytical tasks	Descriptive statistics, Clustering

Source

ggInterval R package (mtcars.i dataset).

References

Henderson, R. and Velleman, P. (1981). Building multiple regression models interactively. Biometrics, 37, 391–411.

Original data from the ggInterval R package (mtcars.i dataset).

Examples

data(mtcars.mix)

dataSDA documentation built on June 12, 2026, 9:06 a.m.