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?
** [[Keep asking|http://www.imsworld.org/images/docs/Doc%206i%20issue%201%20guidance%20notes%20on%205%20Whys%20Technique.pdf]]
* How?
** Which techniques and analysis will you use?

Part of [[M7-Quantitative Decision Methods-S1 - Managing Data and Survey Methods]]
bag
mbi_public
created
Fri, 18 Nov 2011 21:07:00 GMT
creator
dirkjan
modified
Fri, 18 Nov 2011 21:07:00 GMT
modifier
dirkjan
tags
Decision
M7
Methods
Model
Quantitative
Term
creator
dirkjan