alleryWhich factor lowers the reliability of an assessment?
AAmbiguous questions
BClear marking rules
CWell trained markers
DSingle-meaning items
Answer & Solution
Correct answer: A. Ambiguous questions
1. Reliability falls when results vary from one occasion or marker to another.
2. Ambiguous questions, vague marking instructions and poorly trained markers cause this.
3. Clear rules and trained markers raise reliability.
_Source: Wikipedia, Educational assessment, Reliability_
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