Figure 1. Series graph at and after differentiation, ACF and PACF correlogram

From

A Comparative Study between ARIMA Model, Holt-Winters – No Seasonal and Fuzzy Time Series for New Cases of COVID-19 in Algeria

Abdelmounaim Hadjira, Hicham Salhi, Fadoua El Hafa

American Journal of Public Health Research. 2021, 9(6), 248-256 doi:10.12691/ajphr-9-6-4