8. The number of murders and from 1981—1987 in Cambridge, MA, U.S. is given.
Table 4.29
Murder (x) 3 4 7 6 0 4 2
(y) 28 30 37 31 27 31 36
a) Find the regression line equation.
32.4+4.7murder
b) Compute the linear correlation coefficient
7.8
c) Estimate the number of murders when the number of is 29. If it cannot be done, explain why not.
it cannot be done because does not have to do with murder.
d) Estimate the number of when the number of murders is 5. If it cannot be done, explain why not.
it cannot be done because these two are not consistent with each other.
2 answers