alleryA wrongly marked ruler always gives the same wrong length. It is what?
AValid but not reliable
BNeither reliable nor valid
CBoth valid and reliable
DReliable but not very valid
Answer & Solution
Correct answer: D. Reliable but not very valid
1. The ruler gives consistent readings every time, so it is reliable.
2. The readings are wrong, so it does not measure length correctly and is not very valid.
3. Hence reliability can exist without validity.
_Source: Wikipedia, Educational assessment, Validity_
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