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1)Guessing by the respondents (examinees) - It tends to raise the total scores thus making correlative coefficient too high, which is suspicious and It contributes to the measurement error.
2)Environmental condition – testing environment at times may not be uniform, and if not uniform, you are likely to get the scores that are not consistent.
3)Momentary fluctuations by the respondents. This fluctuation influences the test scores sometimes by raising or lowering the scores.
4)Group variability – tests that are administered to different groups in terms of gender may not give the scores that are consistent.
johnson mwenjera answered the question on November 25, 2017 at 18:23
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