Data exhibit a steady growth or decline over time. Choose.. Choose... Time series Delphi method MAPE MAD Qualitative data methods Cycles Strategic forecast Weighted moving average Simple Linear regressions Trend Naive forecasting Exponential smoothing forecast Data exhibit upward and downward swings in over Choose. a very long time frame. Choose... Eliminate the problem of Time series Delphi method positive errors by MAPE cancelling negative MAD errors. Qualitative data methods Cycles Strategic forecast Weighted moving average Simple Linear regressions Trend Naive forecasting Exponential smoothing forecast Eliminate the problem of positive errors by cancelling negative errors. Choose... Choose... Time series Delphi method MAPE MAD Qualitative data methods Cycles Strategic forecast Weighted moving average Simple Linear regressions Trend Naive forecasting Exponential smoothing forecast