exam 3 study guide

# exam 3 study guide - Psych 1167 Exam 3 Study Guide Chapter...

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Psych 1167: Exam 3 Study Guide Chapter 7 Stuff 1. What does correlation measure? 2. What is the difference between a univariate and a bivariate distribution? 3. Are the following positive, negative, or zero correlations? a. People that are high on one variable tend to be high on the second variable, and vice versa. b. People that are high on one variable tend to be low on the second variable, and people that are low on one variable tend to be high on the second variable c. People that are high on one variable may be high or low on the second variable, and people that are low one variable may be high or low on the second variable 4. Be able to interpret scatter plots a. What does each point (dot) represent? b. If a scatter plot show a pattern moving from the lower left to the upper right, is it a positive, negative, or zero correlation? c. What if the pattern moves from upper right to bottom left? d. What if the dots are scattered all over the place, with no discernable pattern? e. How do you determine how strong a correlation is just by looking at the scatter plot? (Not the exact correlation coefficient; just a rough estimate of the relative strength) f. What does a curvilinear relationship look like? 5. Be able to interpret correlation coefficients a. What is the possible range of correlation coefficients?

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