18b. Calculate q

15b.  B1 B2 A1 20 10 A2 10 20   Main effect for A: [MainEffectA] Main effect for B: [MainEffectB] Interaction = [Interaction]

21d. What are the degrees of freedom? (3pts)  

11. In the scatterplot next to this question is there a positive, negative, or lack of correlation between the two variables? There is a _______ correlation between the two variables

21b. Calculate the correlation. (3pts each) SP = [SP] SSx = [SSx] SSy = [SSy] r = [r]

3. What does the pattern of scores in the scatter plot best reflect?

20. The following data come from the Military Health and Well-Being Project. These are the results from 1495 current and former service members. I looked at a correlation between two variables combat (a sum of combat exposures) and PSY (a measure of mental health where higher numbers indicate better mental health). Write up the following SPSS output using an APA sentence below. (6pts)

1. Researchers who study the process of reading in children have discovered that better readers make smoother eye movements across the page (i.e., there is a positive correlation between reading skill and the smoothness of the eye movements). Which of the following statements is a possible cause of the correlation between smooth eye movements and reading ability?

21a. Write the hypotheses. (4pts) 

2. A correlation is used when: