1. a) Draw a scatterplot of a small magnitude negative correlation.

b) Draw a scatterplot of a large magnitude positive correlation.

c) Explain how in comparing these two pictures you can see the magnitude is greater in b)

Height (number (X) 4 2 6 5 7 3 2 5 4 1 3 2 4 6

of stories)

Fear rating (Y) 2 1 6 6 7 5 3 3 5 1 2 2 3 4

2. Consider the above pairs of numbers representing the height of a building where the person is standing on the roof and fear ratings on a 8 point scale in a group of 14 acrophobics

a. State the null and alternative hypotheses for testing if the correlation between building height and fear ratings is significant (i.e., different from 0).

b. Find the critical value to compare this against with a criterion of .01.

c. Compute the correlation coefficient (show all your work).

d. Compare it to the critical value, and make your conclusion.

e. Compute the effect size.

f. Write up an APA formatted results section for your finding, following the example format from class.