Differences between Primary and Secondary data

S. No	Primary	Secondary
1	The major source of Primary data is field observation/visit	The major surce of secondary data is the published and not published reports and literatures already carried out by others
2	Such data are pure and are not used by anyone previously	Such data are already used by others
3	Such data take more effort, money and time to collect	Such data are time, money and efforet constraint
4	Researcher do not have to hesitate to use such data because there are authentic and collected by themselves	Researchers have to cross check the facts and analyze secondary data critically before using
5	Such data are crude and have to be processed before using	Such data are already processed so researcher can use directly by providing credit to the source
6	Such data are collected as per the necessity of the researcher	Such data are already available and may not match the necessity of the researcher