Final Exam Study Guide_fall2009

Final Exam Study Guide_fall2009 - HP 340 Final Exam Study...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
HP 340 Final Exam Study Guide This covers most everything that will be on the exam. If you can answer all these questions, you should be in pretty good shape. 1. Dependent variable: 2. Independent variable 3. Statistic 4. Population 5. Sample 6. Parameter 7. Descriptive statistics 8. Inferential statistics
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10. What are the four measurement scales? Give an example of each. Nominal Ordinal Interval Ratio 11. What is the difference between a categorical and continuous variable? Give an example of each. 12. What are the characteristics of a mean? 13. What is the difference between parametric and non-parametric tests? 14. What is the least-squares regression line? Why is it used? 15. What is the standard error of the estimate? Why do we measure this? How is it symbolized? 16. What is a correlation coefficient?
Background image of page 2
17. What is the possible range of values of a correlation? 18. How are Pearson’s r and Spearman’s r different (conceptually)? 19. In regression, b symbolizes ______________? Thus, for every one unit change in X, there will be a _______change in Y. 20. Using regression, we find the equation for the relationship between cigarettes/day (x) and upper-respiratory infections/year (URI). The equation is: URI = .10x + .5 . On average, how many URIs does a non-smoker get per year? For every cigarette smoked, there is a _______ /year (increase/decrease) in URIs. 21. If the correlation coefficient is positive, the b will be positive, negative, or zero? 22. To compute the Mann-Whitney U statistic to compare the distribution of two groups, the raw scores need to be __________.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
5, 2, 8, 2, 3, 2, 4, 12, 16, 3, 5 24. Using the above numbers, calculate the following, assuming the distribution is a population: a. Mean = b. Median = c. Mode = d. Standard Deviation= e. Variance= 25. What can be said about the order of the mean, median, and mode for each of the following: a. Normal distribution: b. positively skewed distribution: c. negatively skewed distribution: 26. Compare and contrast the mean, median, and mode with respect to a) their sensitivity to extreme scores. 27. How is alpha used in the test of Ho? 28. Define Type I and Type II errors? 29. What is alpha’s relationship to Type I and Type II errors?
Background image of page 4
30. What is central limit theorem? 31. What is the difference between directional(one-tailed) and non-directional (two-tailed) hypotheses? 32. Why can’t an F-statistic be negative?
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1 . In a standard normal distribution, the mean is _______ and the standard deviation is ________. 2. Assume that the scores are normally distributed on a test with a population mean of 75 and standard deviation equal to 16. a.
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/27/2010 for the course HP 340L at USC.

Page1 / 19

Final Exam Study Guide_fall2009 - HP 340 Final Exam Study...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online