Table 2.

Description of ARIMA parameters.

Parameter	Description
$p$	is the order of the auto regressive part of the model.
$d$	is the order of differencing to remove trend/seasonality.
	$d=0$ means no differencing, $d=1$ means the series is differenced once
	and so on.
$q$	is the order of the moving average part of the model; to smooth out
	random effects if any.