5 why and how technique
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Asking:
- Who?
- A Census is defined as the complete enumeration of all people, items or organization that is relevant for a data investigation question. A sample is just a part of that.
- So the first question in any problem is to identify a relevant Population based on which correct inferences can be made.
- Decide for census or sample
- Surveys are preferred when cost or time constraints exists
- Samples should be representative and sufficiently large
- What?
- What data will depend on what we want to achieve.
- A statement of objectives will be helpful.
- Discriminate between primary data (data to be acquired for a new purpose) and secondary data (data that is already available but has been collected for another purpose)
- Where?
- Distinguish between internally and externally gathered data
- In externally collected data verify the validity.
- Why?
- [asking]
- How?
- Which techniques and analysis will you use?
Part of M7-Quantitative Decision Methods-S1 - Managing Data and Survey Methods
