The confidence interval defines the range above and below a forecasted value where the value has some probability of occurring. For example, a confidence interval of 10% and 90% gives two points for each forecasted value. The lower point represents the 10th percentile. The higher point represents the 90th percentile. The chance that the predicted value will fall within this range is 80%. The farther out the forecast is, the larger this range is.
To select a confidence interval, select from the