limits

The data are numbers of traffic accidents with personal injuries, reported to the police, on Swedish 
roads on 92 days in 1961 and 92 matching days in 1962. On some of these days a general speed limit
of 90 or 100 km/hour was imposed.

datasets

Contains the datasets and a few functions for use with
the practicals outlined in Appendix A of the book
Statistical Models (Davison, 2003, Cambridge University Press),
which can be found at <doi:10.1017/CBO9780511815850>.

Alessandra Brazzale

SMPracticals

Practicals for Use with Davison (2003) Statistical Models

limits function

A data frame with 92 observations on the following 5 variables.<dl>
 <dt>day</dt>
<dd>A factor indicating the day, coded <code>1</code>-<code>92</code>.</dd> <dt>lim1</dt>
<dd>1 indicates a limit imposed in 1961, 0 not.</dd> <dt>lim2</dt>
<dd>1 indicates a limit imposed in 1962, 0 not.</dd> <dt>y1</dt>
<dd>Number of accidents on this day in 1961.</dd> <dt>y2</dt>
<dd>Number of accidents on this day in 1962.</dd> 
</dl>

Format

Swedish Speed Limit Data — limits

A data frame with 92 observations on the following 5 variables.<dl>
 <dt>day</dt>
<dd>A factor indicating the day, coded <code>1</code>-<code>92</code>.</dd>

 <dt>lim1</dt>
<dd>1 indicates a limit imposed in 1961, 0 not.</dd>

 <dt>lim2</dt>
<dd>1 indicates a limit imposed in 1962, 0 not.</dd>

 <dt>y1</dt>
<dd>Number of accidents on this day in 1961.</dd>

 <dt>y2</dt>
<dd>Number of accidents on this day in 1962.</dd>

 
</dl>

limits: Swedish Speed Limit Data

Description

Usage

Arguments

Format

Examples