1. Exam One Review Quiz Psy302 Quantitative Methods

2. 1. The symbol µ represents: A. a parameter B. the variance C. the sample mean D. the population standard deviation E. a statistic

3. The symbol µ represents: A. a parameter B. the variance C. the sample mean D. the population standard deviation E. a statistic

4. 2. In order to calculate the variance you must first calculate the: A. standard deviation B. Z score C. median D. deviation score E. square root

5. In order to calculate the variance you must first calculate the: A. standard deviation B. Z score C. median D. deviation score E. square root

6. 3. Which of the following uses all the data? A. median B. Range C. Variance D. Mode E. b & c

7. Which of the following uses all the data? A. median B. Range C. Variance D. Mode E. b & c

8. 4. Lorenzo scored at the 10 th percentile. What would be his Z score? A. 1 B. –1.2 C. 2.3 D. –2.2 E. 10

9. Lorenzo scored at the 10 th percentile. What would be his Z score? A. 1 B. –1.2 C. 2.3 D. –2.2 E. 10

10. 5. What is Vikeisha’s individual deviation score? A. -1 B. 2 C. 3 D. 4 E. 0

11. What is Vikeisha’s individual deviation score? A. -1 B. 2 C. 3 D. 4 E. 0

12. 6. Use table A to find the value of Z with 25% of the observations falling below it? A. -.675 B..2533 C. –1.66 D.. 9978 E. -.2533

13. Use table A to find the value of Z with 25% of the observations falling below it? A. -.675 B..2533 C. –1.66 D.. 9978 E. -.2533

14. 7. Which of the following is a measure of variability? A. Spread B. Range C. Mean D. Correlation E. skewness

15. Which of the following is a measure of variability? A. Spread B. Range C. Mean D. Correlation E. skewness

16. 8. Cameron scored 85 on a test with a mean of 75 and a standard deviation of 5. Kristen scored 85 on a test with a mean of 75 and a standard deviation of 10. Assuming normal distributions, who is the better student? A. Kristen B. Cameron C. both are the same D. can't say from these data

17. Cameron scored 85 on a test with a mean of 75 and a standard deviation of 5. Kristen scored 85 on a test with a mean of 75 and a standard deviation of 10. Assuming normal distributions, who is the better student? A. Kristen B. Cameron C. both are the same D. can't say from these data

18. 9. Mary had a percentile score of 48. Kyle had a z score of zero. Assuming a normal distribution, who performed the best? to answer A. Kyle B. Mary C. Need to know the standard deviation to answer D. need to know the mean to answer E. C & D

19. 9. Mary had a percentile score of 48. Kyle had a z score of zero. Assuming a normal distribution, who performed the best? to answer A. Kyle B. Mary C. Need to know the standard deviation to answer D. need to know the mean to answer E. C & D

20. 10. What percent of scores lie below a z score of +1? A. 84% B. 16% C. 68% D. 50% E. 95%

21. 10. What percent of scores lie below a z score of +1? A. 84% B. 16% C. 68% D. 50% E. 95%

22. The End