jevons


In a study of coinage, W. Stanley Jevons weighed 274 gold sovereigns that he had collected from circulation in Manchester, England. For each coin, he recorded the weight, after cleaning, to the nearest .001 gram, and the date of issue.  The age classes are coded 1 to 5, roughly corresponding to the age of the coin in decades.  The standard weight of a gold sovereign was suppose to be 7.9876 grams; minimum legal weight was 7.9379 grams.


datasets

This package is a companion to the textbook S. Weisberg (2005),
"Applied Linear Regression," 3rd edition, Wiley. It includes all the
data sets discussed in the book (except one), and a few functions that
are tailored to the methods discussed in the book.  As of version 2.0.0,
this package depends on the car package. Many functions formerly
in alr3 have been renamed and now reside in car.
Data files have beeen lightly modified to make some data columns row labels.

Sanford Weisberg

alr3

Data to accompany Applied Linear Regression 3rd edition

jevons function

This data frame contains the following columns:
 <dl>
    <dt>Age</dt><dd>
Age of coins, decades 
    </dd> <dt>n</dt><dd>
Number of coins 
    </dd> <dt>Weight</dt><dd>
Average weight, grams 
    </dd> <dt>SD</dt><dd>
Standard deviation. 
    </dd> <dt>Min</dt><dd>
Minimum weight 
    </dd> <dt>Max</dt><dd>
Maximum weight
    </dd> </dl> 

jevons: Jevon's gold coin data

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