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Taste-Test:How Many People Should I Test?
Posted: Sun Dec 02, 2007 3:57 pm
by smartgirl777
How many people should I test in a taste-test of colas?
Posted: Sun Dec 02, 2007 6:49 pm
by staryl13
Hi!
How many people you use as your sample size really depends on how much error you are willing to tolerate. Of course, the perfect experiment would try and eliminate all bias and outside variables with a huge sample size. You should try taking the largest sample possible for more accurate results. Here's a sample size calculator that will give you a rough idea of how large your sample size should be:
http://www.custominsight.com/articles/r ... ulator.asp
Also, this test has been done before, so try searching online for related information.
Good luck!
Posted: Sun Dec 02, 2007 6:55 pm
by Louise
staryl13 wrote:Hi!
How many people you use as your sample size really depends on how much error you are willing to tolerate. Of course, the perfect experiment would try and eliminate all bias and outside variables with a huge sample size. You should try taking the largest sample possible for more accurate results. Here's a sample size calculator that will give you a rough idea of how large your sample size should be:
http://www.custominsight.com/articles/r ... ulator.asp
Also, this test has been done before, so try searching online for related information.
Good luck!
Just to add to Staryl13's good advice...
Sciencebuddies also has a page on this topic.
https://www.sciencebuddies.org/mentori ... ants.shtml
Louise