Define the terms (a) Enumerator (b) Investigator and © Respondent.
(a) Enumerator The person who collects data by conducting an enquiry or an investigation is called enumerator. Often the enumerator is a trained person for field work.
(b) Investigator The person who plans and conducts the statistical investigation independently or with the help of others is called investigator.
© Respondent The person who answers/responds to the set of questions is called respondent.