Question
3. Exercise 4.3 The county assessor is studying housing demand and is interested in developing a regression model to estimate the market value (i.e., selling
3. Exercise 4.3
The county assessor is studying housing demand and is interested in developing a regression model to estimate the market value (i.e., selling price) of residential property within her jurisdiction. The assessor suspects that the most important variable affecting selling price (measured in thousands of dollars) is the size of house (measured in hundreds of square feet). She randomly selects 15 houses and measures both the selling price and size, as shown in the following table. Complete the table and then use it to determine the estimated regression line.
Points:
Points: Close Explanation Explanation: In words, for each hundred square feet, the expected selling price of a house selector 1
Points: Close Explanation Explanation: What is the standard error of the estimate (sese )? 9.886 9.843 9.510 Points: Close Explanation Explanation: What is the estimate of the standard deviation of the estimated slope (sbsb )? 0.386 0.372 0.385 Points: Close Explanation Explanation: Can the assessor reject the hypothesis (at the 0.05 level of significance) that there is no relationship (i.e., =0=0 ) between the price and size variables? (Hint: t0.025,13=2.160t0.025,13=2.160 ) Yes No Points: Close Explanation Explanation: Complete the following worksheet and then use it to calculate the coefficient of determination.
Points: The coefficient of determination (r2r2 ) is selector 1
Points: Close Explanation Explanation: The F-ratio is selector 1
Points: Close Explanation Explanation: 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? 177.4 to 215.4 245.5 to 285.1 176.6 to 216.2 |
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