An example of procedure in the data validation process is when:
a.
the interviewer contacts the respondent simply to get a name and address and then proceeds to falsify the interview.
b.
the raw data is checked for mistakes made by either the interviewer or respondent.
c.
a sample of respondents is recontacted and asked to verify whether they answered various questions from different parts of the interview form.
d.
a sample of respondents is recontacted to ensure the interview took place at the proper setting.
e.
a sample of respondents is recontacted to ensure that they are qualified to participate in the exercise.
Answer: D