1. In this specific scenario above, how do I determine what is the independent variable? Is it between or within-subjects? How many levels does it have, and what are they?
What is the best way to tackle the following assignment; A psychology instructor at a large university teaches statistics. There are 22 students in the class, and he has broken them into two groups. Each group has a different graduate assistant who is responsible for running separate breakout lectures and lab sections of the course. One graduate assistant (GA) has lots of experience teaching, while the other has more limited experience. The instructor wants to check for comparable learning across the two GAs, hoping students receive similar experiences (i.e., to find no difference). The data below are the scores (out of 100) of the students on the first midterm. Use it to test whether there is a difference between the groups.
Group 1 (less experienced GA) Group 2 (more experienced GA)
60 70
65 85
69 72
58 83
57 81
59 69
52 65
72 75
70 79
65 71
75 80
1. In this specific scenario above, how do I determine what is the independent variable? Is it between or within-subjects? How many levels does it have, and what are they?
2. How do I determine what is the dependent variable? What is its scale of measurement?
3. What relevant statistical output can I provide?
4. What type of appropriate graph in SPSS can I provide?
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- How can I create an appropriate graph in SPSS with the above scenario?
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