- Submitted By: preethi0006
- Date Submitted: 12/18/2014 2:41 AM
- Category: Book Reports
- Words: 268
- Page: 2

PSY 325 Entire Course

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Chi-Square Test of Independence. Describe the chi-square test of independence. Give an example of a question that could be answered using this test. If you were to assemble a contingency table, what would be included in your rows and columns? Pick a cell of this contingency table and explain what the value in the cell would represent (you do not need to give the value, just explain what it would represent)? What hypothesis would be tested? What do you think the answer would be? Why?

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PSY 325 Week 2 DQ 1 Graphs

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Graphs. Give one example of health-related data (a variable) that can be represented by a pie chart. Do the same for a bar chart and a histogram. Explain why each data example you selected (there will be a total of three different variables) is well represented by the corresponding graph.

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PSY 325 Week 4 DQ 1 Correlation

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Correlation. Much has been written about the relationship between a student’s S.A.T. test scores and their family’s income. Generally speaking, there is a strong positive correlation between income and S.A.T. scores. What might this tell you? Is this evidence that having a high family income causes one to have high S.A.T. scores? Is this evidence that high S.A.T. scores are a cause of high income? Or, does this tell you something else? If something else, what? In the course of your response, explain why correlation alone is rarely sufficient to demonstrate cause.

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