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 (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

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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