How should regression-derived adjustments be treated in an appraisal report?
Correct Answer
C) Tested against other market evidence for sense
Why this is correct: Regression-derived adjustments should be tested against other market evidence for sense. A statistical coefficient is an estimate that must be reconciled with actual market behavior, such as paired sales analysis or cost data, to ensure it is reasonable and supported. Why the other choices are wrong: They should not be adopted without comment, as they are not purely objective; they depend on model specification. They are not used only where no paired sales are available; they can be used alongside other evidence. They should not be reported as the sole basis for the conclusion without corroboration. Exam tip: Never blindly accept a regression output. Always ask: 'Does this adjustment make sense based on other market evidence I've seen?'
Why This Is the Correct Answer
Why this is correct: Regression-derived adjustments should be tested against other market evidence for sense. A statistical coefficient is an estimate that must be reconciled with actual market behavior, such as paired sales analysis or cost data, to ensure it is reasonable and supported. Why the other choices are wrong: They should not be adopted without comment, as they are not purely objective; they depend on model specification. They are not used only where no paired sales are available; they can be used alongside other evidence. They should not be reported as the sole basis for the conclusion without corroboration. Exam tip: Never blindly accept a regression output. Always ask: 'Does this adjustment make sense based on other market evidence I've seen?'
More appraisal-statistical-methods Questions
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An appraiser runs a regression of sale price on GLA, age, and a binary variable for 'renovated' (1 = yes, 0 = no). The estimated coefficient for 'renovated' is $18,400 with a standard error of $6,200 and a t-statistic of 2.97. Assuming a two-tailed test at Ξ± = 0.05 and 42 degrees of freedom, what conclusion is supported regarding the market's recognition of renovations?
To validate the functional form of a regression model used for adjustments, an appraiser plots residuals against predicted values and observes a clear inverted-U pattern. What does this pattern indicate, and what is the most defensible corrective action?
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