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SocSci 9c Test 3 2007

# SocSci 9c Test 3 2007 - NAME TEST THREE PROBABILITY AND...

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NAME: _______________________________ I.D.: _________________________________ TEST THREE PROBABILITY AND STATISTICS, 9C MAY 11, 2007 1. Why is it that even though η 2 should conceptually equal zero when the null hypothesis is true, it in fact, on average, doesn’t. 2-3. (Changing someone’s question quite a bit) Leah wants to calculate a Kruskal-Wallis H test for the following data. The independent variable is major and the dependent variable is test score. Please calculate H for her, state the critical value, and state what we can conclude about the relationship between major and test score. Engineering: 110, 122, 123, 130 Humanities: 120, 129, 132, 158, 163 Fine Arts: 140, 162, 164 Social Ecol. 127, 131, 137, 138 3. You are conducting two different tests. In one test you are comparing level of fitness within middle school and in the other test you are comparing the level of fitness within high school. You sample kids from different grades and record their level of fitness. Which of the following two tests (middle school or high school) shows the highest level of robustness. Please explain.

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SocSci 9c Test 3 2007 - NAME TEST THREE PROBABILITY AND...

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