Studies that deal with monitoring marketing performance are control studies

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.

When a person knowledgeable on the subject of the study selects units that he or she feels are most representative of the population, the approach is called a. stratified sampling

b. convenience sampling. c. judgment sampling. d. systematic sampling.