1. Explain why we cannot calculate the mean and standard deviation for scores on a categorical variable.
2. A study reported r(98) = 0.32. Is this a significant correlation? How do you know?
3. A Pearson r of +0.85 indicates a strong, positive relationship between the dependent variables.
a. True
b. False
4. A linear regression can determine the best-fit line to the data.
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