Question

Which of the following is not a method of collection of primary data.

• A. Questionnaires
• B. Interviews
• C. Demonstration
• D. Case studies

Answer 1

The correct option is C Demonstration

Primary data is the data which is observed or collected from first hand experience.The main methods of primary data are as following

Questionnaires

Interviews

Observations

Case studies

portfolios

critical incident

Questionnaire is a set or questions with a choice of answer for the purpose survey.

Interview is the technique used to understand people's attitudes,preferences or behavior.

Case studies involve measuring what is there and how it got there.

So we can see that data collected from Questionnaires,interviews and case studies will be categorized in primary data as these data is always collected from first hand experience.

Data collected in the past or other parties are called secondary data.Demonstration is a practical explanation or exhibition of how something works or is performed.So Demonstration will be categorized in Secondary data.

So option C is correct.