Moving average forecasts look at: 1 point The mean average percentage error in the time series O The sum of the last group of observations of performance 7 The mean square error within the time series of observations O The sum of the error rate (forecast vs actual) over a month [Checkbox question: the correct answer is formed by selecting 1 to 4 of the options] - First come first served is a scheduling model often used: I point Consider the length of time the service will require Considers the availability of specialist resources In service delivery (scheduling vehicles) Where the only criterion is the arrival time of the customer