The confidence interval of the prediction is a range
that is likely to contain the mean response for the given values of independent variables in a
model. However, the prediction interval of forecast is a range that is likely to contain the mean
forecasted response for the given value of independent variables in a model (Walpole et al.,
2012). Chatfield (2000) and Hyndman and Atha- nasopoulos (2013) mentioned the calculation of
prediction intervals using theoretical formulae that are basically of the same
general form. Prediction interval at