As we defined data before that is any observational collected in respect of any characteristic or event, data can be categorized as: primary data and secondary data . And every type of data is different from the other in methods of collection. Primary sources of data are that collected first-hand especially for purpose of study and from people who have a direct connection with it. Finding out first-hand the attitudes of a community towards health services, ascertaining the health needs of a community , evaluating a social program , determining the job satisfaction of the employees of an organization , and ascertaining the quality of service provided by a worker are examples of information collected from primary sources. Secondary sources of data are that provide second hand information and involves analysis, interpretation, and evaluation of primary data. And these sources are readily collected and available from other sources. The use of census data to obtain ...
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