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Exam One Review Quiz Psy302 Quantitative Methods

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

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

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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

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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

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

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

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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

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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

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

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

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

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

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

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

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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

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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

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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

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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

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

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

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