# help understand which test for which situation (stat, anova, chi etc)

Discussion in 'Step I' started by peter90036, Jun 15, 2008.

1. ### peter90036 not out fishing 7+ Year Member

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i cant understand + remember what test to pick for what situation
anova, chisquare, matched pairs, t tests, etc

do you have an outline with examples that helps understand all this?

2. ### It'sElectric 10+ Year Member

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t-test: compares 2 means
ANOVA: compares 3 or more means
Chi Square: compares percentages/proportions rather than actual means

3. ### Instatewaiter But... there's a troponin 10+ Year Member

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what he said ^

4. ### Helo 2+ Year Member

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d

#4
Last edited: Aug 8, 2010
5. ### luhando Senior Member 7+ Year Member

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the important logical step in differentiating chi-square from the other two is that chi-square deals with qualitative variables (ie disease or no disease) while the other 2 deal with quantitative variables (ie mean BMI).

6. ### It'sElectric 10+ Year Member

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You're correct, but I'm just trying to make it as basic and to the point as possible - which is pretty much how I'm guessing any question on Step 1 referencing either of those 3 items would be. I think "mean" is the opportune word that should set off a red flag in your brain differentiating t-test/anova from chi square.

7. ### 45408 aw buddy 7+ Year Member

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and the chi-square looks like a % sign to me, so that's how I know what it's for

8. OP

### peter90036 not out fishing 7+ Year Member

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thanks, this is the stuff i'm looking for

9. ### luhando Senior Member 7+ Year Member

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haha...most def.

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