Secondary Research

Secondary research occurs when a project requires a summary or collection of existing data. As opposed to data collected directly from respondents or "research subjects" for the express purposes of a project, secondary sources already exist.

The sources in the secondary research are books,websites, news reports and other peoples work.  Some resources are not reliable as there other peoples own work and always not true.

If you want to research something about how many people read a certain magazines you would use secondary research to get figures.

Heres an example of  secondary research from the National Readership Survey. This can also be primary research and quantitative research. This type of information shows how many men and woman read the magazine and how many in different in the classess read the magazines. This gives you more information about the thing you are looking for.