Elementary Statistics and Computer Application

Difference between Primary and secondary data

	Primary Data	Secondary Data
1. Original data	Primary data are original because investigation himself collects them.	Secondary data are not original since investigator makes use of the other agencies.
2. Suitability	If these data are collected accurately and systematically their suitability will be very positive.	These might or might not suit the objectives of enquiry.
3. Time and labour	These data involve large expenses in terms of money, time and manpower	These data are relatively less costly.
4. Precaution	don’t need any great precaution while using these data.	These should be used with great care and caution.