ESTIMATE input=(ramp); FORECAST lead=5 id=year out=out1; run; PROC generates diagnostic plots: Autocorrelation of Residuals To Chi- Pr > Lag Square DF ChiSq ---------------Autocorrelations--------------- 0.3275 6 6.93 6 -0.025 0.067 -0.027 -0.032 -0.152 -0.192 0.2834 12 14.28 12 0.086 -0.104 -0.074 -0.041 -0.091 0.3164 18 20.30 18 -0.086 0.111 0.041 -0.073 0.142 -0.066 0.6166 24 21.37 24 -0.015 -0.020 -0.036 -0.059 -0.047 -0.030 Optional: more on seasonal, time permitting: Example 9: Visitors to St. Petersburg/Clearwater
ESTIMATE input=(ramp); FORECAST lead=5 id=year out=out1; run; PROC generates diagnostic plots: Autocorrelation of Residuals To Chi- Pr > Lag Square DF ChiSq ---------------Autocorrelations--------------- 6 6.93 6 0.3275 -0.025 0.067 -0.027 -0.032 -0.152 -0.192 12 14.28 12 0.2834 0.086 -0.104 -0.074 -0.041 -0.091 18 20.30 18 0.3164 -0.086 0.111 0.041 -0.073 0.142 -0.066 24 21.37 24 0.6166 -0.015 -0.020 -0.036 -0.059 -0.047 -0.030 Optional: more on seasonal, time permitting: Example 9: Visitors to St. Petersburg/Clearwater
Dickey_Advenures%20in%20Forecasting%20Short%20Course.docx