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STAT 104. Section 8 Daniel Moon. Contents Feedback on HW #7 Critical Value Pooled, Unpooled, and Paired t-test F-test P-Value (Sample size is very large.

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Presentation on theme: "STAT 104. Section 8 Daniel Moon. Contents Feedback on HW #7 Critical Value Pooled, Unpooled, and Paired t-test F-test P-Value (Sample size is very large."— Presentation transcript:

1 STAT 104. Section 8 Daniel Moon

2 Contents Feedback on HW #7 Critical Value Pooled, Unpooled, and Paired t-test F-test P-Value (Sample size is very large  Low P) Plus Four Two-way Tables Chi-square

3 How to take critical value One-sided (95%) Critical Value Z: 1.65 Two-sided (95%) Critical Value Z: 1.96 F 0.025,33, 43 = ~1.90 F > F 0.025,33, 43

4 Feedback PooledUnpooled Paired the most conservative F test no significant difference in variance Follows Normal Sample number should be same Q. Pooled vs. Paired ? Sensitivity to an unequal sample data point vs. ? Weight Gain

5 F-test Are extremely sensitive to nonnormal distributions F-test can be used for comparing several means Multiple Regression

6 Plus Four

7 Chi-square distribution

8 Two-way ANOVA Standardized residual

9 Two-way ANOVA

10 Project Review of a published paper Analysis of data


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