By Rizwan Mushtaq Under supervision of
Mumtaz Ahmed
ABSTRACT This study is based on examining the relationship between income and consumption series of India covering the period of 1980-2009. Data about certain indicators were obtained from the official web site of World Bank. In first step of data analysis appropriate ARMA model was determined using correlogram and information criteria as well, and applied to the consumption data only. These models (ARMA and ARIMA models) are built up from the white noise process. We use the estimated autocorrelation and partial autocorrelation functions of the series to help us select the particular model that we will estimate to help us forecast the series. Second step of data analysis was comprised of co-integration and Error Correction model. It was found that per capita Gross Domestic Product and final household consumption per capita of India are not cointegrated. It was observed that both the series are integrated at order two I (2). But second condition of co-integration was not satisfied, the residuals were not found stationary. Hence it might be possible to conclude that there is no long run relationship between consumption and GDP series of India. As we know that the series are not co-integrated so we cannot apply Error correction model, but for the sake of understanding more specifically we also applied Error Correction Model. The adjustment co-efficient was not up to the standard it was around zero, it suggest that there is no need to make adjustments. Keywords: Gross Domestic Product, Consumption, ARMA, Co-Integration, Error Correction Model 1
AUTOREGRESSIVE MOVING AVERAGE PROCESS
1. Moving Average Process
In time series analysis, the moving average (MA) model is a common approach for modeling univariate time series models. Generally Lags of error term on independent side are called moving average