Complete the following worksheet and then use it to calculate the coefficient of determination. ii xixi yiyi yˆy^ (yˆi−y

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Complete the following worksheet and then use it to calculate
the coefficient of determination.
ii
xixi
yiyi
yˆy^
(yˆi−y¯)2y^i−y¯2
(yi−yˆ)2yi−y^2
(yi−y¯)2yi−y¯2
The coefficient of determination (r2r2) is
The F-ratio is , which means that the
assessor reject, at the 5% level of significance,
the null hypothesis that there is no relationship between the
selling price and the area of the house. (Hint: The critical value
of F0.05,1,13F0.05,1,13 is 4.67.)
Which of the following is an approximate 95% prediction interval
for the selling price of a house having an area (size) of 15
(hundred) square feet?
173.4 to 218.8
174.6 to 217.6
244.0 to 287.0