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Forecast the number of repair orders for 2008 and 2010.

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An appliance repair shop owner has fitted the quadratic trend equation y = 90 + 0.9x + 3x2 to a time series of annual repair orders, with y = the number of repair orders and x = 1 for 2000. Forecast the number of repair orders for 2008; for 2010.

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Solution Preview

For 2008, x = 9, substitute x = 9 in the trend equation.
y = 90 + ...

Solution Summary

A step by step solution is provided to problem on finding the number of repair orders for 2008 and 2010.

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