Types of Date: Primary & Secondary

Primary data

Primary data are original observations collected by the researcher or his agent for the first time for any investigation and used by them in the statistical analysis.

The primary data is the one type of important data. It is collection of data from first-hand information.

This information published by one organization for some purposes. This type of primary data is mostly pure and original data.

The primary data collection is having three different data collection methods are:

• Data Collection through Investigation:

In this method, trained investigators are working as employees for collecting the data. The researchers will use the tools like interview and collect the information from the individual persons.

• Personal Investigation Methods:

The researchers or the data collectors will conduct the survey and hence they collect the data. In this method we have to collect more accurate data and original data. This method is useful for small data collection only not big collection of data projects.

• Data Collection through Telephones:

The data researcher uses the tools like telephones, mobile phones to collect the information or data. This is accurate and very quick process for data collection. But information collected is not accurate and true.

(2) secondary data

The secondary data is the other type of data, which is collection of data from second hand information. This information is known as, given data is already collected from any one person for some purpose, and it has available for the present issues. And mostly these secondary data are not relevant and pure or original data.