“…Thus, the simple moving average method is applied to modeling COVID-19 in Iraq [26], USA [27], Pakistan [28], Italy and Spain [29], China [30], etc. Also popular are such derivatives of the method as the exponential moving average [31][32][33], ARIMA (autoregressive moving average) [34][35][36], and SARIMA (seasonal autoregressive moving average) models [37][38][39].…”