Obviously, you are responsible for all material (assigned chapters in the text, lectures, handouts, etc.). If you have questions about what you are responsible for, please ask. I would suggest you concentrate your studying on the following topics:
1. Population
2. Sample
3. Range
4. Variance
5. Standard Deviation
6. Interquartile range
7. Z scores
8. Mean
9. Median
10. Mode
11. Skew
12. Nominal data
13. Ordinal data
14. Interval data
15. Ratio data
16. Independent variable
17. Dependent variable
18. Null hypothesis
19. Research hypothesis
20. One-tailed test
21. Two tailed test
22. Directional hypothesis
23. Non-directional hypothesis
24. Categorical variable
25. Quantitative variable
26. Population
27. Parameter
28. Sample
29. .Statistic
30. .Discrete variable
31. Continuous variable
32. Normal distribution
33. Outlier
34. Central Limits Thereom
35. Sampling error
36. Standard error of the mean
37. Sampling distribution
38. Type I error
39. Type II error
40. Significant difference
41. Random sample
42. Variables
43. Alpha
44. Beta
45. Power
46. Inferential statistics
47. Descriptive statistics
48. Confidence Interval