aic_j is the relative value of what model how to calculate the difference of model and response variable how to combine two forecast models for different responses how to combine forecast and response variables if the model is based on a response variable how to compare it with the base model? how to combine different forecasts how to combine the forecasts when response variable is different? calculating the differences of each model in the forecasting model using the same response variable in an example how to combine forecasts for different response variables how to combine forecasts in models which variable is the base model? how to combine forecasts how to combine forecasts what model to use to combine two models how to compute the differences between model e and forecast how to combine forecast and model what is the difference between the base and aic? how do you combine the forecasts? what is the problem? quizlet aic_j is a variable that is not directly comparable for the model model aic_j is a model's relative probability