Maslahatul Khaerat, Muhammad Fahmuddin S, & Mar’ah, Z. (2026). Comparison of Methods Fuzzy Time Series Chen And Fuzzy Time Series Cheng On the Closing Price Forecast of PT Bank Central Asia Tbk (BBCA) Shares. VARIANSI: Journal of Statistics and Its Application on Teaching and Research, 8(02), 221-236. https://doi.org/10.35580/variansiunm531