For your retail data (from Exercise 3 in Section 2.10), nd the appropriate order of dierencing (after transformation if necessary) to obtain stationary data. Exercise 3 For the following series, find...

For your retail data (from Exercise 3 in Section 2.10), nd the appropriate order of dierencing (after transformation if necessary) to obtain stationary data.

Exercise 3

For the following series, find an appropriate Box-Cox transformation and order of dierencing in order to obtain stationary data.

a. usnetelec

b. usgdp

c. mcopper

d. enplanements

e. visitors