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Sales ComparisonMEDIUM16.4% of exam

Adjustments for one element have opposite signs across comparables. What should the appraiser assess?

Correct Answer

C) Whether each sign and size fits the difference and market support

Comparables may be superior or inferior to the subject for the same element, producing opposite signs. Evaluate each sign, magnitude and applicable market evidence. An identical per-unit rate is appropriate only when supported across those particular differences; nonlinear effects, different ranges or contexts may justify differing rates. Do not select cases merely by favorable adjustment direction.

Answer Options
A
Whether all downward-adjusted cases can be discarded
B
Whether all signed adjustments can be replaced by their mean
C
Whether each sign and size fits the difference and market support
D
Whether one identical dollar amount should replace each adjustment

Why This Is the Correct Answer

Option C is correct because adjustments are made toward the subject, so a comparable superior in an element gets a negative adjustment and an inferior one gets a positive adjustment. The appraiser should assess whether each sign and magnitude fits the actual difference and is supported by the market. A uniform rate is appropriate only when the evidence supports it across those differences.

Why the Other Options Are Wrong

Option A: Whether all downward-adjusted cases can be discarded

Option A asks whether all downward-adjusted cases can be discarded. Choosing comparables by the direction of their adjustments is selective and unsupported; a downward adjustment just means the comparable is superior in that element.

Option B: Whether all signed adjustments can be replaced by their mean

Option B asks whether all signed adjustments can be replaced by their mean. Averaging positive and negative adjustments would erase real differences between comparables and does not reflect each one's relationship to the subject.

Option D: Whether one identical dollar amount should replace each adjustment

Option D asks whether one identical dollar amount should replace each adjustment. Comparables can differ from the subject by different amounts and in different directions, so a single flat figure would misstate many of them unless the evidence supports it.

Signs follow the subject

Each comparable's sign comes from its own comparison with the subject, so mixed signs are expected when the subject falls in the middle.

How to use: Use this to recognize that opposite signs are normal and to focus on whether each one is supported.

Exam Tip

Avoid answers that simplify by discarding, averaging or flattening adjustments; the better answer checks each adjustment against the actual difference and market support.

Common Mistakes to Avoid

  • -Treating mixed adjustment signs as an error
  • -Discarding comparables because they need downward adjustments
  • -Forcing one flat amount when the market shows nonlinear effects

Concept Deep Dive

Analysis

This question tests how to interpret adjustments with opposite signs for the same element. Opposite signs are normal when some comparables are superior and others inferior to the subject. The appraiser should check that each sign and amount fits the actual difference and is supported by market evidence, rather than forcing a single uniform figure.

Background Knowledge

The direction and sign of adjustments depend on whether the comparable is superior or inferior to the subject in each element. Mixed signs across comparables are common and can help bracket the subject's value. Adjustment amounts may also vary across ranges when market reactions are nonlinear.

Real-World Application

A subject has 2,000 square feet, with comparables of 1,800, 2,100 and 2,300 square feet. The size adjustments are positive for the smaller comparable and negative for the two larger ones. The appraiser confirms each amount reflects market-supported rates for those size ranges.

adjustment directionsign of adjustmentsbracketingmarket supportmagnitude
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