Sunday, November 15, 2009

Statistics...survey?

I'm taking a math statistics class and i have to conduct a survey. I want to know if people lost weight and how did they lose it? How large should my population and sample be? What survey method do you think is best for this survey?

Statistics...survey?
u should also conduct the survey on Y/A and as well as ppl ur friends with! A big sample would be a good idea :)
Reply:In theory, the larger your sample the more reliable your results. In practice, however, this is a school project, so you have to keep it reasonable. Anything in between 10 - 50 people (however much you can manage) should be fine, I guess.





As for the methodology: A fully structured questionnaire; these are really the standard method in quantitative research (which is where statistics are most useful, anyway). A further advantage of this is that you can just give it to people and ask them to fill it out by themselves rather than you having to spend extra time interviewing them.





Make sure to include a demographics section (age, sex, maybe some economic status indicators) so that you can compare these to the overall results.


No comments:

Post a Comment