Forecasting 8 ARIMA 4 Auto-regressive 4 moving average 4 Seasonal autoregressive integrated moving averages 3 article 3 Exponentially weighted moving average 2 Laboratories 2 Malaysia 2 Mean square error 2 Models 2 Monte Carlo methods 2 Moving average 2 Moving averages 2 Optimization 2 Random processes 2 SARIMA 2 Statistical process control 2 Time series analysis 2 Times series models 2 computer simulation 2 exponentially weighted moving average 2 human 2 prediction 2 ARAR 1 ARIMA model 1 ARMA model 1 Accuracy 1 Air pollution 1 Air pollution modelling 1