Three quarterly models were used, based on 1965-75 data, to examine the statistical relation~hips between the retail value, the farm value, and the spread of a fixed sample of food products included in the market basket. The first model gives quarterly expected price indices and price...

Changes over time in consumer demand, influenced by advertising, may not be accounted for in traditional, fixed parameter explanatory and forecasting models. A distributed lagged advertising model was developed and tested with coefficients that had random and systematic adjustments. A variable...