1. Artificially limiting your scores is known as

a. Range Restriction

c. Sampling Error

b. A Skewed Distribution

d. A Correlation Coefficient

2. What are the four possible explanations for a correlation between two variables?

3. 62 people participate in your study, and you obtain the following data:

M_X= 6 SP = 50

M_Y= 10 SS_X= 40

SS_Y= 95

a. Calculate the Pearson correlation coefficient (r) for the above data.

b. Calculate the slope.

c. Calculate the Y Intercept

d. What is the regression line for this data?

4. Suppose you were interested in conducting a study examining how ratings of similarity between oneself and another person were related to how attracted one is to the other person. You conduct this study by giving participants a description of a person named "Sarah." Participants are asked to read the description and then rate on a scale from 1 to 10 how similar Sarah is to themselves. You also ask each participant to rate on a scale from 1 to 20 how likeable they think Sarah is.

X = rating of similarity to oneself

Y = rating of likability of the target ("Sarah")