Question

Your time series data are as follows.
-1.899 0.712 1.805 1.642 1.217 0.66 2.127 2.699 1.779 4.135 2.959 3.463 2.561 1.715 3.872 3.693 4.591 4.513 3.504 3.674
For these data (length 20), plot the times series, plot the acf, and get the acf function numerically. Do the same for the differenced series of length 19.

Your time series data are as follows. 1.899 0.712 1.805 1.642 1.217 0.66 2.127 2.699 1.779 4.135 2.959 3.463 2.561 1.715 3.872 3.693 4.591 4.513 3.504 3.674 For these data (length 20), plot the times series, plot the acf, and get the acf function numerically. Do the same for the differenced series of length 19. Part a) The serial correlations of lags 1,2,3 are: Part b) For the differenced series, the serial correlations of lags 1,2,3 are:

Answer 1

Time series plot: 5.2 4.55 3.9 3.25 2.6 1.95 1.3 3 5 9 13 15 17 19 21 0.65 1.3 1.95