Answer:
As the data is collected for a small group, due to which assumptions cannot be made beyond the small group of people.
It becomes difficult to demonstrate, maintain and assess the rigidity of the data.
Collection of statistical data is not easy and cannot be done solely by using this method.
As the data is in big quantity, analysis and interpretation of the data takes much time.
The responses of the subjects might be affected as the researchers are bound to be present during the process of data gathering.
Explanation:
weeknesses only