1. Testing seasonal adjustment with Demetra+
Antonian Karine Armenovna
National Statistical Service
of the Republic of Armenia

2. Main results

3. Graphs of the results

4. Check for the sliding seasonal factor

5. General quality diagnostics

6. Residual seasonality

7. Stability of the model

8. Residuals

9. Choice of the approach and regressors
Method used - X12
Specific holidays were chosen
Specification used - RSA1.

10. Conclusions
Unfortunately we don’t have enough information to understand the results and be able to analyze them . We also had problems installing Demetra+ program, it was only possible to install on the computers with Windows 7, because we didn’t know minimal operating system requirements for Demetra+. The program Demetra+ works without problems. In future we would like to have sufficient information, that will help us to answer many questions that have arisen.

11. Questions to be addressed
We would like to have more information on: 1. How to select between the specifications (RSA0 - RSA5)? 2. Explain in more detail the meaning of irregular component and the trend-cyclic component. 3. To understand and read the results of seasonal adjustment. 4. Explain ARIMA model and the airline model. 5. Impact of calendar effects on measuring economic activity.

12. THANK YOU FOR YOUR ATTENTION!