Define Investigator, Enumerator and Respondent.
1. Investigator is a person who plans and conducts an investigation independently or with the help of others
2. Enumerator is a person who actually collects the desired statistical information or data.
3. Respondent is a person who answers or responds to the set of questions included in the questionnaire.
2. Enumerator is a person who actually collects the desired statistical information or data.
3. Respondent is a person who answers or responds to the set of questions included in the questionnaire.