Schedule
Schedule is also used for the collection of primary data. A schedule is a list of question. it is a device of obtaining answer to the questions in a form which is filled in by the question in a form which is filled in by the enumerators (the field personnel who put these question) or the interviewers in a face to face situation with the informants respondents, In of questions for securing specific data for a given problem in short a schedule is a list of question which is filled in by the trained enumerators in a face to face situation with the respondents.