Blowdown


Data from the Boundary Waters Canoe Area Wilderness Blowdown.  The data frame blowdown
includes nine species of trees.  The data for balsam fir, summarized by diameter
class, are given in <code>BlowBF</code>.


datasets

This package is a companion to the textbook S. Weisberg (2014),
"Applied Linear Regression," 4rd edition, Wiley. It includes all the
data sets discussed in the book and one function to access the textbook's
website.
This package depends on the car package.  Many data files in this package
are included in the alr3 package as well, so only one of them should be
loaded.

Sanford Weisberg

alr4

Data to accompany Applied Linear Regression 4rd edition

Blowdown function

This data frame contains the following columns:
 <dl>
    <dt>d</dt><dd>
Tree diameter, in cm
    </dd> <dt>s</dt><dd>
 Proportion of basal area killed for the four species balsam fir, cedar, 
 paper birch and blue spruse, a measure of
 local severity of the storm.
    </dd> <dt>spp</dt><dd>Tree species, a factor with 9 levels
    </dd> <dt>y</dt><dd>
 1 if the tree died, 0 if it survived
    </dd> </dl> 

Blowdown: Blowdown data

Description

Arguments

Format

Source

References

Examples