The dataset contains information about the mortality rate from 60 U.S. cities using aggregate information from the year 1969/70.

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A data frame with 60 observations on the following 8 variables.

`MO70`

a numeric vector of the total mortality (number of deaths per 1000 people) from 1970.

`MAGE`

a numeric vector of the median age of the population (in years) from 1969.

`CI68`

a numeric vector of the number of packs of cigarettes per year per person.

`MDOC`

a numeric vector of the density of medical doctors (number of medical doctors per 100,000 people).

`DENS`

a numeric vector of the percentage of households with more than 1.5 persons per room.

`NONW`

a numeric vector of the fraction of the non-white population.

`EDUC`

a numeric vector of the percentage of the population over age 25 having a high-school diploma.

`IN69`

a numeric vector of the median income from 1969.

CROCKER,D.T. et al. (1979). *Methods
Development for Assessing Air Pollution Control Benefits, Vol. 1.
Experiments in the Economics of Epidemiology.* EPA-600/5-79-001a.
Springfield, VA; National Technical Information Service.

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