In words, what is the meaning of the coefficient -.001? What does this mean, and how can it be interpreted in the context of the population being studied?
A regression of the number of cases of a particular disease per 1000 people based on the number of people vaccinated against it as children (per 1000) is performed on data collected from 34 cities. The results are summarized below:
Intercept .914
Slope -.001
For every vaccination per 1000 people, there will be .001 fewer reported cases. This indicates the value of vaccinating the population, and the expected return per vaccination.
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