USING R TO TEACH SEASONAL ADJUSTMENT

Autor: Pedro Costa Ferreira, Daiane Marcolino de Mattos
Jazyk: English<br />Spanish; Castilian<br />Portuguese
Rok vydání: 2017
Předmět:
Zdroj: Cadernos do IME: Série Estatística, Vol 40, Iss 1, Pp 19-33 (2017)
Druh dokumentu: article
ISSN: 1413-9022
2317-4536
DOI: 10.12957/cadest.2016.25077
Popis: This article shows, using R software, how to seasonally adjust a time series using the X13-ARIMA-SEATS program and the seasonal package developed by Christoph Sax. In addition to presenting step-by-step seasonal adjustment, the article also explores how to analyze the program output and how to forecast the original and seasonally adjusted time series. A case study was proposed using the Brazilian industrial production. It was verified that the effect of Carnival, Easter and working days improved the seasonal adjustment when treated by the model.
Databáze: Directory of Open Access Journals