so2.us.cities

Of concern for public health officials and biologists are models of air 
pollution as a function of environmental characteristics. Using a meta-analysis of 
government publications Sokal and Rolf (1995) compiled an interesting dataset which 
investigates air pollution (measured as annual mean SO\(_2\) concentration per m\(^3\)) 
as a function of six environmental variables for 32 cities in the United States. 
Whenever the data were available they are based on averages of three years 1969, 1970, 
and 1971.

datasets

Contains functions from: Aho, K. (2014) Foundational and Applied Statistics for Biologists using R.  CRC/Taylor and Francis, Boca Raton, FL, ISBN: 978-1-4398-7338-0.

Ken Aho

asbio

A Collection of Statistical Tools for Biologists

so2.us.cities function

The dataset contains 8 variables:<dl>
<dt><code>City</code></dt>
<dd>US city.</dd><dt><code>Y</code></dt>
<dd>Average annual SO\(_2\) concentration per m\(^3\).</dd>
 
<dt><code>X1</code></dt>
<dd>Average annual temperature (degrees Celsius).</dd><dt><code>X2</code></dt>
<dd>Number of industrial companies with more than 20 employees.</dd><dt><code>X3</code></dt>
<dd>Population size (1970 census) in thousands.</dd><dt><code>X4</code></dt>
<dd>Average Annual average wind speed.</dd><dt><code>X5</code></dt>
<dd>Average Annual precipitation (cm).</dd><dt><code>X6</code></dt>
<dd>Average number of days with precipitation.</dd> 
</dl>

Format

SO2 data for 32 US cities with respect to 6 explanatory variables — so2.us.cities

The dataset contains 8 variables:<dl>
<dt><code>City</code></dt>
<dd>US city.</dd>

<dt><code>Y</code></dt>
<dd>Average annual SO\(_2\) concentration per m\(^3\).</dd>
 
<dt><code>X1</code></dt>
<dd>Average annual temperature (degrees Celsius).</dd>

<dt><code>X2</code></dt>
<dd>Number of industrial companies with more than 20 employees.</dd>

<dt><code>X3</code></dt>
<dd>Population size (1970 census) in thousands.</dd>

<dt><code>X4</code></dt>
<dd>Average Annual average wind speed.</dd>

<dt><code>X5</code></dt>
<dd>Average Annual precipitation (cm).</dd>

<dt><code>X6</code></dt>
<dd>Average number of days with precipitation.</dd>

 
</dl>

so2.us.cities: SO2 data for 32 US cities with respect to 6 explanatory variables

Description

Usage

Arguments

Format