The data below shows the number of registered automatic weapons, in thousands, and the murder rate, in murders per 100,000, for eight randomly selected states.
a. Determine the correlation coefficient between the number of automatic weapons and the murder rate.
b. Find the equation of regression line.
c. Approximately what murder rate can we anticipate in a state that has 14 thousand registered weapons?
Automatic Weapons x 11.1, 8.7, 6.7, 3.7, 2.5, 2.1, 2.3, 0.6
Murder Rate y 13.7, 10.8, 11.5, 10.8, 5.4, 6.6, 3.2, 4.2