a. The Mauna Loa data are only available in a text le (.csv) (at least as far as I can see). You will have to download and modify this le in a text editor to get the numbers that you want, i.e. eliminate the text at the beginning. Use either the monthly observations or the de-seasonalized monthly observations. b. Take the CPI data from the same dates, i.e. beginning in 03/1958. Compute the correlation between P and C. (3. Next, for each series Z (Z = P or Z = C) compute the monthly percentage change Z'Z'f'l'l x 100. Call these by the same variable name but lower case: p, c (:1. Compute the correlation between p and c. e. Interpret your results