## Students Estimates of Lecture Room Width

### Description

Lecture room width estimated by students in two different units.

### Usage

data("roomwidth")

### Format

A data frame with 113 observations on the following 2 variables.

- unit
a factor with levels `feet`

and `metres`

.

- width
the estimated width of the lecture room.

### Details

Shortly after metric units of length were officially introduced
in Australia, each of a group of 44 students was asked to guess,
to the nearest metre, the width of the lecture hall in which
they were sitting. Another group of 69 students in the same room
was asked to guess the width in feet, to the nearest foot. The
data were collected by Professor T. Lewis and are taken
from Hand et al (1994). The main question is whether estimation in feet and
in metres gives different results.

### Source

D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway and E. Ostrowski (1994).
*A Handbook of Small Datasets*, Chapman and Hall/CRC, London.

### Examples

data("roomwidth", package = "HSAUR")
convert <- ifelse(roomwidth$unit == "feet", 1, 3.28)
boxplot(I(width * convert) ~ unit, data = roomwidth)