Under this methods the enumerators are appointed and given training. They are provided with schedules containing relevant questions. These enumerators go to respondents with these schedules. Data are collected by filling up the schedules by enumerators on the basis of replies given by respondents. Much depends upon the capability of enumerators so far as this methods is concerned. Some occasional field checks on the work of the enumerators may ensure sincere work.
The researcher should select one of these methods of collecting the data taking into consideration the nature of investigation objective and scope of the inquiry financial resources available time and the desired degree accuracy.