14.23 Death by intent. Table 14.1 gives data on on homicide and suicide rates from 2008–2010 for 26 counties in Ohio. The homicide rates for 14 of the counties should be treated with caution because of low counts. You made a scatterplot of these data in Exercise 14.19.
(a) Do you think the correlation will be about the same for the counties for which the data do need to be treated with caution and for the counties for which the data do not need to be treated with caution, or quite different for the two groups? Why?
(b) Calculate r for the counties for which the data do need to be treated with caution alone and also for for the counties for which the data do not need to be treated with caution alone. (Use your calculator.)