# Conditions for significance tests?

• Apr 25th 2011, 05:11 PM
helpplz
Conditions for significance tests?
My class is reviewing for the AP exam, and tomorrow we're having a quiz on conditions for all significance tests. Unfortunately, I don't have my book with me. I do remember most of the conditions, I just need someone to help fill in the blanks.

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1. Z-test:

SRS, Normality (n>30). Is there anything else? Also, is there a difference in conditions between one sample and two sample z-tests?

2. T-test:

SRS, Normality (If n<15, no skewness or outliers; if 15<n<30 no outliers, can be relative skewness, if n>30 no outliers). Again, am I missing anything? Are the conditions different for matched pairs test and two sample test?

3. 1 Prop z test:

SRS, population > 10n, n(p-hat) > 10, n(1-p-hat) > 10

4. 2 prop z test:

SRS, N >10n; n1p1 ≥ 5; n1(1-p1) ≥ 5; n2p2 ≥ 5; n2(1-p2) ≥ 5

5. Chi squared tests:

SRS, All expected counts are at least 1; No more than 20% of the expected counts are less than 5. (Are there any differences in the conditions for chi squared tests of goodness of fit, assoc/ind, homogeneity?)

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That's all I can remember. What am I missing?
• Apr 25th 2011, 05:16 PM
pickslides
Is ANOVA being tested?
• Apr 25th 2011, 05:34 PM
helpplz
Quote:

Originally Posted by pickslides
Is ANOVA being tested?

Nope.