The data set cancer examines a relationship between lung cancer
and cigarette smoking. The data consist of , a standardized measure of
smoking amount (smoke) and the standardized
mortality ratio (SMR) for males in England and Wales in 1970-72 who
were working in 25 different broad groups of jobs such as textile
workers, miners, etc.
A data frame with 25 observations on the following 2 variables.
: standardized measure of smoking amount
: standardized mortality ratio