plot_predictions        Function to plot the Error Comparison
prediction_append       To attach and compare new method to existing
                        comparison study done with function
                        'impute_errors()'
prediction_errors       Function working as testbench for comparison of
                        Prediction algorithms
prediction_remove       Removes unwanted method from already existing
                        methods in Test bench
step_ahead_forecast     Function to calculate the step ahead
                        forecasting for a proposed Prediction method
