1. Chapter 3

Which pair of scores represents the same level of measurement?

a. football jersey numbers and height

b. eye color and distance

c. height and eye color

d. distance and height

2. Chapter 3

What percent of the cases would you find in a distribution between the median and P75?

a. 25%

b. 34%

c. 50%

d. unable to determine from information given

3. Chapter 3

Which of the following best describes the standard deviation?

a. the average number of test scores that vary from the mean

b. the variability of a set of test scores around the mean

c. the difference in test scores between groups of participants

d. the amount the test scores differ from each other

4. Chapter 3

You want to make the norms as easy as possible for students, parents, administrators, and teachers to understand. How would you report your results?

a. raw scores only

b. raw scores and percentiles

c. raw scores, percentiles, and T-scores

d. raw scores, percentiles, and z-scores

5. Chapter 3

The average number of points scored by National Basketball Association (NBA) teams last year was 100 per game. The standard deviation was 30 points. In 95% of the games NBA teams scored fewer than how many points? Round to the closest whole number.

a. 135

b. 140

c. 149

d. 155

6. Chapter 3

Scholastic Aptitude Test (SAT) scores are normally distributed with a mean of 500 and a standard deviation of 100. A student's SAT score is 430. What is the student's percentile? Round to the nearest whole number.

a. 22

b. 24

c. 26

d. 30

7. Chapter 3

Which of the following measurement scales is related to grouping or classifying?

a. nominal

b. ordinal

c. interval

d. ratio

8. Chapter 3

For a set of 5,000 scores, the mean is 98, the median is 110, and the mode is 120. Which of the following describes the distribution?

a. homogeneous

b. heterogeneous

c. positively skewed

d. negatively skewed

9. Chapter 3

T-score = 43. What is the percentile?

a. 24.20

b. 25.80

c. 34.13

d. 43.06

10. Chapter 3

Consider the scores 2, 3, 3, and 4 as a sample. Which best represents the value of the variance?

a. .55

b. .66

c. .77

d. .88