Laia HF, Zahedi. Implementation of Autoregresssive Integrated Moving Average (ARIMA) on Forecasting the Number of Positive Cases of Covid-19 in North Sumatra on September 2021: Implementasi Autoregresssive Integrated Moving Average (ARIMA) Pada Peramalan Jumlah Kasus Positif Covid-19 Sumatera Utara Pada September 2021. J. of Maths Tech and Edu [Internet]. 2022Jun.3 [cited 2024Dec.22];1(3):229-41. Available from: https://talenta.usu.ac.id/jomte/article/view/8820