TIME SERIES ANALYSIS OF LEMON CONSUMER PRICES USING THE BOX-JENKINS APPROACH

被引：0

作者：

Sahinli, M. A. ^{[1
]}

机构：

[1] Ankara Univ, Agr Fac, Agr Econ, TR-06110 Ankara, Turkey

来源：

JOURNAL OF ENVIRONMENTAL PROTECTION AND ECOLOGY | 2020年 / 21卷 / 06期

关键词：

time series; ARIMA models; Box-Jenkins model; forecasting; lemon consumer prices;

D O I：

暂无

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Consumer prices are important macroeconomic indicators and the producers/buyers want to follow trustworthy and unbiased indicators in the economy. The main objective of this paper is to analyse the applicability of the Box-Jenkins approach to monthly time series of lemon consumer prices acquired from the Turkish Statistical Institute database from January 1st 2005 to June 30th 2019. The analysis revealed that ARIMA (1,1,0) explained the data best based on the Ljung-Box statistics and their p-values, and small marginal change. The null hypothesis stating that there is no residual autocorrelation is not rejected. According to the test results, however, the null hypothesis of Jarque-Bera (JB) test is rejected. Thus, the null hypothesis reveals that there are a few outlying observations and the error process is heteroskedasticity.

引用

页码：2443 / 2449

页数：7

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