March 12, 2008

March 12, 2008 - the results are due to the independent...

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March 12 Outline I. Review of Type I and Type II error II. Considerations in setting alpha III. Sign test on SPSS IV. Directional hypotheses A. Implications 1. For H 0 2. For determining chance probability 3. For decisions about H 0 B. When to use C. Illustration D. “One tail” vs. “Two tail” V. Statistical “ significance
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Type I error: a decision to reject the null hypothesis when it is true (to conclude that
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Unformatted text preview: the results are due to the independent variable, when in fact they are due to chance) Type II error: a decision to retain the null hypothesis when it is false (to conclude that the results are due to chance, when in fact they are due to the independent variable) Significant: H has been rejected (a conclusion that the results are due to the independent variable)...
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March 12, 2008 - the results are due to the independent...

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