T-test, Anova

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T-test, Anova

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AngChop
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Topics: 8
Posts: 36

02/14/05 - 05:40 PM

Can anyone tell me the difference between a T-test and a one-way Anova..don't they both involve 1 nominal variable and 1 interval variable? And..what test would we use to compare whether a clinical benefit of a drug exists or not?

mjl1717
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Topics: 955
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02/14/05 - 06:30 PM

nominal-different groups-comparing meds, gender, etc.
Ordinal--rank order--class rank in med school
Interval-- exact differences, using means and deviations, Using Galilean #s

*t test-Uses "ONLY" 2 groups -1 interval and 1 nominal variable
eg. Women who go to charm school have a greater quantity of estrogen
women in charm school is the nominal and estrogen is interval since it has to be quantified.

One way ANOVA- uses 2 or more groups
eg. USMLE test scores at 3 different schools
3 schools- nominal/ test scores interval.
I think the best thing is to play with it.
Hope this helps.

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AngChop
Forum Junior

Topics: 8
Posts: 36

02/14/05 - 09:02 PM

thanks...it does help..god biostats can be a real pain

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