Xây dựng dự báo chuỗi thời gian cho vùng mới

# Build a time series model for the region using auto.arima
SEC_t_model_arima <- ___(___)

# Forecast the time series model
for_SEC_t <- ___(___, h = ___)

# Make into an xts object from the forecast you just made
for_SEC_t_xts <- ___(___$mean, order.by = ___)

# Calculate the MAPE
MAPE <- mape(___, SEC_t_v)
print(MAPE)