ex2220

The data are the number of cancer deaths among survivors of the atomic bombs 
 dropped on Japan during World War II, categorized by time (years) after the 
 bomb that death occurred and the amount of radiation exposure that the 
 survivors received from the blast. Also listed in each cell is the person-
 years at risk, in 100's. This is the sum total of all years spent by all 
 persons in the category. The data can be analyzed by supposing the number of 
 cancer deaths in each cell is Poisson with mean = risk x rate, where risk is 
 the person-years at risk and rate is the rate of cancer deaths per person
 per year. How does the rate depend on the radiation exposure, after accounting
 for years after exposure?

datasets

Data sets from Ramsey, F.L. and Schafer, D.W. (2013), "The
Statistical Sleuth: A Course in Methods of Data Analysis (3rd
ed)", Cengage Learning.

Berwin Turlach

Sleuth3

Data Sets from Ramsey and Schafer's "Statistical Sleuth (3rd
Ed)"

ex2220 function

A data frame with 42 observations on the following 4 variables.<dl class="dl-horizontal">
 <dt>Exposure</dt><dd>radiation exposure, in rads</dd>
 <dt>YearsAfter</dt><dd>years after the exposure</dd>
 <dt>AtRisk</dt><dd>number of survivors in the group</dd>
 <dt>Deaths</dt><dd>number of survivors in the group who died of Cancer</dd>
 </dl>

Format

Cancer Deaths of Atomic Bomb Survivors — ex2220

A data frame with 42 observations on the following 4 variables.<dl class='dl-horizontal'>
 <dt>Exposure</dt><dd>radiation exposure, in rads</dd>
 <dt>YearsAfter</dt><dd>years after the exposure</dd>
 <dt>AtRisk</dt><dd>number of survivors in the group</dd>
 <dt>Deaths</dt><dd>number of survivors in the group who died of Cancer</dd>
 </dl>

ex2220: Cancer Deaths of Atomic Bomb Survivors

Description

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Examples