If the same questionnaire about income and education is given to the same person at two different times, and nothing significant has changed between the two times, the responses should be the same, and if they are not, the questionnaire can best be described as invalid.

Question

Quizplus · Accepted Answer

The inconsistency in responses could indicate a lack of reliability rather than invalidity. Validity concerns whether the questionnaire measures what it's supposed to measure, while reliability refers to the consistency of the responses.

If the Same Questionnaire About Income and Education Is Given