The estimated true value of community water consumption is 800,000 gallons for a given month. Assume that the seasonal, cyclical, and irregular components are 80%, 110%, and 130%, respectively, of normal usage
Use the multiplicative time series model in determining the quantity of water consumed during the month.
The multiplicative model takes the following form: Xt = TtStCtIt. Therefore, the quantity of water consumed during the month is x = 800,000(0.80 )(1.10 )(1.30 ) = 915,200 gallons.
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