Data were recorded for the demand and revenue of a given product. Find the linear regression line which represents the revenue function. Find the quadratic regression curve which represents the revenue function.
Data Demand x Revenue y
1 0 100
2 4 139.2
3 8 176.8
4 12 212.8
5 16 247.2
6 20 280
7 24 311.2
8 28 340.8
9 32 368.8
10 36 395.2
Find the following:
(a) \ The linear regression line is y= _ + _x
(b) \ The quadratic regression line is
y= _ x^2+ _ x + _
Which model seems more accurate?
A. Quadratic regression function
B. Linear regression function
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