The Helicopter Division of Aerospatiale is studying assembly costs at its Marseilles plant. 6 Past data indicates the following labor hours per helicopter:

Using these data, apply simple linear regression, and examine the residual plot. What do you conclude? Construct a scatter chart and use the Excel Trend line feature to identify the best type of curvilinear trend-line that maximizes R2.

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Helicopter Number 2 3 4 5 6 Labor Hours 2,000 1,400 1,238 1,142 1,075 1,029 985 957