Explain internal economics and internal diseconomics

Kahn company's static budget was based on sales volume of 12,000 units. its flexible budget was based on sales volume of 14,000 units. based on this information multiple choice the sales volume variance is expected to be unfavorable. the materials cost volume variance is expected to be favorable. the labor cost volume variance is expected to be unfavorable. none of the answers is correct.

True or false: a fitted model with more predictors will necessarily have a lower training set error than a model with fewer predictors.

You are a manager at asda. you have been given the demand data for the past 10 weeks for swim rings for children. you decide to run multiple types of forecasting methods on the data to see which gives you the best forecast. if you were to use exponential smoothing with alpha =.8, what would be your forecast for week 22? (the forecast for week 21 was 1277.) week demand 12 1317 13 1307 14 1261 15 1258 16 1267 17 1256 18 1268 19 1277 20 1277 21 1297