Microcomputer components. A staff analyst for a manufacturer of microcomputer components has compiled monthly data for the past 16 months on the value of industry production of processing units that use these components (X, in million dollars) and the value of the firm's components used (Y, in thousand dollars). The analyst believes that a simple linear regression relation is appropriate but anticipates positive autocorrelation. The data follow:

Data Set Xt 2.052 2.026 2.002 1.949 1.942 1.887 1.986 2.053 2.102 2.113 2.058 2.06 2.035 2.08 2.102 2.15 yt 102.9 101.5 100.8 98 97.3 93.5 97.5 102.2 105 107.2 105.1 103.9 103 104.8 105 107.2