Metamorphic testing · Question 24 of 60
Which is an example of a monotonic metamorphic relation?
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Answer
- C A housing price model never predicts a lower price for more floor space
Explanation
Suppose a model estimates housing prices. If it is given a larger living area with otherwise identical details, the estimate must not fall. The output therefore moves in a fixed direction when the input changes; that is monotonicity. If the output stayed the same under small disturbances, that would be invariance.