Currently, I am developing an evaluation instrument in building performance. What could be some steps to validate my questionnaire?
Go for content validity by taking experts opinion. And for reliability use test retest method of reliability
How will i conduct test-retest? how many sample size? does it depend on me? or should i use slovin's formula?
Could you have a look on this website :
http://www.slideshare.net/pbbarlow1/common-stats-in-survey-research-final
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