Exam One Review Quiz

Psy302 Quantitative Methods

1. The symbol µ represents:

A. a parameterB. the varianceC. the sample meanD. the population

standard deviationE. a statistic

The symbol µ represents:

A. a parameterB. the varianceC. the sample meanD. the population

standard deviationE. a statistic

2. In order to calculate the variance you must first calculate the:

A. standard deviation

B. Z scoreC. medianD. deviation scoreE. square root

In order to calculate the variance you must first calculate the:

A. standard deviation

B. Z scoreC. medianD. deviation scoreE. square root

3. Which of the following uses all the data?

A. medianB. RangeC. VarianceD. ModeE. b & c

Which of the following uses all the data?

A. medianB. RangeC. VarianceD. ModeE. b & c

4. Lorenzo scored at the 10th percentile. What would be his Z score?

A. 1B. –1.2C. 2.3D. –2.2E. 10

Lorenzo scored at the 10th percentile. What would be his Z score?

A. 1B. –1.2C. 2.3D. –2.2E. 10

5. What is Vikeisha’s individual deviation score?

A. -1B. 2C. 3D. 4E. 0

What is Vikeisha’s individual deviation score?

A. -1B. 2C. 3D. 4E. 0

6. Use table A to find the value of Z with 25% of the observations falling below it?

A. -.675B. .2533C. –1.66D. . 9978E. -.2533

Use table A to find the value of Z with 25% of the observations falling below it?

A. -.675B. .2533C. –1.66D. . 9978E. -.2533

7. Which of the following is a measure of variability?

A. SpreadB. RangeC. MeanD. CorrelationE. skewness

Which of the following is a measure of variability?

A. SpreadB. RangeC. MeanD. CorrelationE. skewness

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. KristenB. CameronC. both are the sameD. can't say from

these data

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. KristenB. CameronC. both are the sameD. can't say from

these data

9. Mary had a percentile score of 48. Kyle had a z score of zero. Assuming a normal distribution, who performed the best?to answerA. KyleB. MaryC. Need to know the standard deviation to

answerD. need to know the mean to answerE. C & D

9. Mary had a percentile score of 48. Kyle had a z score of zero. Assuming a normal distribution, who performed the best?to answerA. KyleB. MaryC. Need to know the standard deviation to

answerD. need to know the mean to answerE. C & D

10. What percent of scores lie below a z score of +1?

A. 84%B. 16%C. 68%D. 50%E. 95%

10. What percent of scores lie below a z score of +1?

A. 84%B. 16%C. 68%D. 50%E. 95%

The End