Please answer the question based on pic i have attached.

Run ACF and time series plot to determine the integration of your series (SA data). That is, is your data stationary? If not, take differences to get your data stationary.

Autocorrelation Function for DESE1 (with 5% significance limits for the autocorrelations) 1.0 D.8 0.6 0.4 0.2 Autocorrelation 0.0 -0.2 -0.4 -0.6 -0.8 -1.0 2 6 8 10 12 14 16 18 20 22 24 26 28 LagTime Series Plot of DESE1 35000 30000 25000 20000 DESE1 15000 10000 5000 11 22 33 44 55 66 77 88 99 110 Index