Situmorang, Aston L. - 2011
purposes of analysis used secondary data time series from the period 2004-2008 includes Cost of Goods Sold, Gross Domestic … research results. The results showed that simultaneous cost of goods sold, gross domestic product and inflation rate have a … F-statistic generated by 18.54 α = significant at 1 percent. The partial cost of goods sold (COGS) and the inflation …