The information is then collected and summarized and presented to the experts. The experts can then reconsider their answers and adjust them. This process can continue as required, with the intention being for a general consensus to emerge. The purpose of the technique is to utilize a range of experts, but in a way where each gives their opinion independently. The main difference between this method and other forecasting methods is that the forecasting is based on opinions, rather than data.

Another forecasting technique is moving-average forecasting. It is used to predict future events based on the assumption that future events will be based on past events. Another related method based on the same assumption is exponential smoothing. This method takes the same approach as moving-average forecasting and also forecasts future events based on past events. The difference is that the calculation includes an adjustment that takes into account both...
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