Syafiqri Alfarizki, & Gatot Yudoko. (2026). IMPROVING SALES FORECAST ACCURACY USING LEAN SIX SIGMA: A CASE STUDY IN THE FMCG INDUSTRY. Multidiciplinary Output Research For Actual and International Issue (MORFAI), 6(3), 3270–3289. https://doi.org/10.5281/zenodo.18951337