# data[].attributes.body
The efficiency of the teaching methods
Questionnaire
Can collect large amount of data in a very short time.
Students can give rate and opinions through questionnaire without answering question with the teacher face to face

The relationship between crime statistics and immigration
data study
Only data provided in the past by the government can let the researchers analyse. Other method may not provide accurate information

A case study on the victims of bullying in schools
Interview
Because it requires in depth details
Students who suffer bully may like to talk to the person who help them directly and feel more comfortable to talk face to face. Victims may give more details and accurate information by interviews

The impact of education on obesity
Observation & Data collection
It is offensive to ask people about obesity directly

How social processes influence patient behaviour
Previous data study, literature review
Fast and convenient