/// <summary>
        /// Prosedur untuk menghitung nilai error hasil prediksi
        /// </summary>
        private void ForecastingError()
        {
            MeasuringForecastingError mfe = new MeasuringForecastingError(this.y, this.residual, 0, this.n);

            this.sse  = mfe.SSE;
            this.mse  = mfe.MSE;
            this.mae  = mfe.MAE;
            this.mpe  = mfe.MPE;
            this.mape = mfe.MAPE;
        }
 /// <summary>
 /// Prosedur untuk menghitung nilai error hasil prediksi
 /// </summary>
 private void ForecastingError()
 {
     MeasuringForecastingError mfe = new MeasuringForecastingError(this.y, this.residual, 0, this.n);
     this.sse = mfe.SSE;
     this.mse = mfe.MSE;
     this.mae = mfe.MAE;
     this.mpe = mfe.MPE;
     this.mape = mfe.MAPE;
 }