This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
Unformatted text preview: The additive method in c) has the lower SSE, so appears to be preferable. e) Does your decision in d) match what you might have suspected by looking at the graph of the first 12 values of the time series? The seasonal variations to not get wider as time passes, so the additive model is expected to do beter. DATA AND PRELIMINARY COMPUTATIONS FROM EXCEL t q1 q2 q3 elec 1 1 99 2 1 88 3 1 93 4 111 5 1 120 6 1 108 7 1 111 8 130 9 1 139 x 1 1 127 85.3912 2 1 1 1 131 1 2 152 1 3 1 160 1 4 1 148 1 5 1 150 1 6 170...
View
Full
Document
This note was uploaded on 02/28/2012 for the course ECON 338 taught by Professor Kmackenzie during the Spring '12 term at McGill.
 Spring '12
 KMackenzie

Click to edit the document details