Multiple Regression Examples

# Multiple Regression Examples - M ultiple Regression...

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Multiple Regression Examples 1. A study of gas turbine engines, found that during the hot summer months, the power output from these engines dropped dramatically. One way to counter this drop in power is by cooling the inlet air of the turbine. The heat rate (kilojoules per kilowatt per hour) of 67 gas turbines augmented with a high-pressure inlet fogging was measured along with cycle speed (revolutions per minute), inlet temperature ( º C), exhaust gas temperature ( º C), cycle pressure ratio, and air mass flow rate (kilograms per second). The following gives the regression equation for predicting heat rate from speed, inlet temperature, exhaust temperature, cycle pressure ration, and air mass flow rate. a. Give practical interpretations for the β estimates. b. Interpret the value. c. Is the overall model statistically useful in predicting heat rate at the α =0.01 level? d. Do the assumptions on the errors appear to be met?

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