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Statistical theory and methodology. Mathematical statistics. Parametric inference. Nonparametric inference.enThu, 30 Mar 2017 10:29:49 GMTvBulletin60http://www.talkstats.com/images/misc/rss.pngStatistics Help @ Talk Stats Forum - Statistical Research
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Is survey design statistically correct?
http://www.talkstats.com/showthread.php/69102-Is-survey-design-statistically-correct?goto=newpost
Thu, 30 Mar 2017 07:47:30 GMTI want to track improvements in how yoga class participants feel on various variables (e.g. energy level, sleep quality, pain felt, mental...I want to track improvements in how yoga class participants feel on various variables (e.g. energy level, sleep quality, pain felt, mental relaxation) before and after a four-day intensive training course.

The design is to give each participant a questionnaire at the start of the course where they answer how they feel currently about each tracked variable, for example their energy level, sleep quality, extent of pain, level of mental relaxation, on a scale of 1 to 10.

Then, after the course, the same participants will answer the same questions again, to evaluate whether they improved on any variable.
So, the answers are not anonymous, and we can know who answered what at the start as well as the end of the course. We are confident that there will be no problem with the response rate in spite of the answers not being anonymous.

Is my study design statistically correct? Or how could it be improved?

And after collecting the data, should I do the paired t-test to check the statistical significance of the differences at the start and after the course for each tracked variable? Is this the right test?

Thanks for any help!
]]>Statistical Researchjohnsifhttp://www.talkstats.com/showthread.php/69102-Is-survey-design-statistically-correct