Department of Science and Mathematics Mulungushi University Kabwe Zambia;
Department of Science and Mathematics Mulungushi University Kabwe Zambia;
School of Business Studies Unicaf University Lusaka Zambia;
Department of Natural Sciences Levy Mwanawasa University Lusaka Zambia;
Department of Science and Mathematics Mulungushi University Kabwe Zambia;
Counterfactual Forecasting; Box-Jenkins Methodology; ARIMA Model; Auto-correlation Function; Partial Autocorrelation Function;