What are the major advantages of using the method of secondary data analysis? Limitations?

What will be an ideal response?

Advantages: It allows analyses of social processes in other inaccessible settings; it saves time and money; it allows the researcher to avoid data collection problems; it facilitates comparison with other samples; it may allow inclusion of many more variables and a more diverse sample than otherwise would be feasible; and it may allow data from multiple studies to be combined. Limitations: The secondary data analyst cannot test or refine the methods to be used on the basis of preliminary feedback from the population or processes to be studied; it is not possible for the analyst to engage in the iterative process of making observations, developing concepts, or making more observations and refining concepts.