The data are the number of measles cases reported in the United States for each year from 1950 to 2008. A goal is to explore the effect of the introduction of the measles vaccine in 1963 on the series mean.
A data frame with 59 observations on the following 3 variables.
number of measles cases
a factor with levels
indicating whether the measles vaccine had been licensed or not (yes for
every year starting with 1963)
Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A Course in Methods of Data Analysis (3rd ed), Cengage Learning.
Center for Disease Control,
http://www.cdc.gov/vaccines/pubs/pinkbook/downloads/appendices/G/cases-deaths.pdf retrieved on July 23, 2009
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