What are the Difference between Primary Data and Secondary Data

S.L	Primary Data	Secondary Data
1	Primary data are always original as it is collected by the investigator.	Secondary data lacks originality; the investigator makes use of the data collected by other agencies.
2	The suitability of the primary data will be positive because it has been systematically collected.	Secondary data may or may not suit the objects of inquiry.
3	Primary data are expensive and time-consuming.	Secondary data is relatively cheaper.
4	Extra precautions are not required.	It is used with great care and caution.
5	Primary data are in the shape of raw materials.	Secondary data are usually in the shape of readymade products.
6	Possibility of personal prejudice.	Possibility of the lesser degree of personal prejudice.