What are the 2 types of data?

The task of data collection begins after problem has been identified.

While deciding about the method of data collection to be used for the study the researcher should keep in mind two types of data viz, primary data and secondary.

The primary data are those, which are collected afresh and for first time and thus happens to be original in character.

The secondary are those which have been collected by someone else and which have already been passed through statistical process.

The researcher would have to decide which sort of data he would be using for his study.

The method collecting primary and secondary data differ since primary data are to be originally collected while in case of secondary data the nature of data collection work is merely that of compilation.