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- An interview is a method of data collection whereby questions are asked and an opinion based answer is given

Types of interviews:
- Structured
- Semi-structured
-Unstructured

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- Used in the quantitative method of data collection
- Questions are prearrange to the level of detail needed to answer specific questions
- Considered rigid

Pros:
-Large sample can be obtained in one go
-replication of multiple samples for structured interviews are easy
-Procedure is easy
- Reliable and quick results

Cons:
- Respondents have to choose options given
- Time taking procedure

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- Interviewer sets prearranged questions in research like structured interviews but the respondent is more flexible and allows to answer in their own words
- Most common in qualitative data collection

Pros:
- Flexible responses
- Good when researcher does not have time to prepare another set of questions and receive feedback immediately
- Provides qualitative data in short amount of time

Cons:
- Reliability of responses may vary due to flexibility
- Comparing answers is difficult

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1. Questionnaires can be distributed when people are having dinner, and collected after a period of time.
2. Questionnaires can be sent to individuals or groups through mobile phones.
3. People can be attracted to fill in the questionnaire in crowded places by the method of "filling in the questionnaire and getting rewards".

Advantages:
1.Questionnaire survey results are easy to quantify.
2. Questionnaire method saves time, money and manpower.
3.Questionnaire survey are convenient for statistical processing and analysis.
Disadvantages:
1.Design - oriented questionnaire survey is difficult. Future-oriented research often requires understanding users' intentions, motivations, and thought processes.
2.Questionnaire is answered by users themselves, so the quality of the survey results is often not guaranteed.

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- No specific predetermined question, list of options, restrictions, and guidelines
-Starts with a few broad questions in research with open and informal discussion

Pros:
- Easy to develop a friendly rapport with respondent
- Participant is able to clarify anything about the question

Cons:
- Time taxing process
- Reliability of responses is questionable
- Ethics are highly involved

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Observation is a method in which the researcher directly observes the object of study through sensory and auxiliary tools according to a specific research purpose, research outline or observation form, in order to obtain information, which is purposeful, planned, systematic and repeatable.

The advantages are 1. It obtains information directly through observation, without any other intermediary. Therefore, the information observed is more realistic.
2、Observation in its natural state can obtain vivid information.
3、Observation has the advantage of timeliness, it can capture the phenomenon that is happening.
4 The observation method is where the observer makes direct observations of the external performance of the subject and therefore obtains more detailed first-hand information

Disadvantages are 1. limited by time 2. limited by the object of observation, some of which have secrets that are not easy to observe visually. 3. influenced by itself, as it is difficult to be completely objective in the results of observation due to the emotional limitations of the individual himself.

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A focus group is a small group of six to ten people led through an open discussion by a skilled moderator. The group needs to be large enough to generate rich discussion but not so large that some participants are left out.  eg: A focus group of parents of preschoolers meets to discuss child care needs.

How can it be used?
Focus groups can be used to explore a variety of different issues, to test solutions, to explore the group's perspective of a problem and to generate ideas.

Considerations.
Defining a focus group
Designing focus group questions
Recruiting and preparing for participants
Conducting the focus group
Analyzing the data

Evidence.
https://irep.olemiss.edu/wp-
content/uploads/sites/98/2016/05/Trinity_
Duke_How_to_Conduct_a_Focus_Group.pdf

Advantage: Easily Measure Customer Reaction.
Disadvantage: Not as In-Depth as Other Market Research.

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(1) development of an observation plan, (2) identification of subjects, including scope and number, according to the purpose of the observation, (3) training of the observer, (4) access to the observation environment, (5) observation and recording, and (6) collation of observation records

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Method of Data Collection In Research | Interview - Questionnaire - Survey

# data[].attributes.attachment_link.description
In the method of data collection in research, the most important part is data collection questions in research, because it gives relevant materials about the relevant topic. The method of data collection in research may be primary or secondary in nature.