Market Power Analysis of Soybean Commodity In East Java

The purpose of this study is to analyze the market power of soybean price. Data used in this research was the statistic data of Time series (1989-2008). Data was estimated by using OLS (Ordinary Least Square). Before estimating the data, the stationary condition of every variable was tested by using ADF Test (Augmented Dickey-Fuller Test). The results found that market power significantly affec…