Categories and Sources of Data
There are two categories of data namely primary data and secondary data.
Primary data are that information which is collected for the first time, from a Survey, or an observational study or through experimentation. For example
· A survey is conducted to identify the reasons from the parents for selection of a particular school for their children in a locality.
· Information collected from the observations made by the customers based on the service they received.
· To test the efficacy of a drug, a randomized control trial is conducted using a particular drug and a placebo.
Let us see the detailed methods of collecting Primary data in the following Section