Statistics for the Behavioral SciencesSecond Edition

Chapter 4:

Central Tendency and Variability

iClicker Questions

Copyright © 2012 by Worth Publishers

Susan A. Nolan and Thomas E. Heinzen

Chapter 4

1. Which of the following is an example of a measure of central tendency?

a) the mean

b) the median

c) the mode

d) all of the above

Chapter 4 (Answer)

1. Which of the following is an example of a measure of central tendency?

a) the mean

b) the median

c) the mode

d) all of the above

Chapter 4

2. Maria wants to calculate the class average for her Statistics class. She adds together her scores for Exam 1, Exam 2, and Exam 3. She then divides this total by 3. Maria has just calculated her:

a) variance.

b) mode.

c) median.

d) mean.

Chapter 4 (Answer)

2. Maria wants to calculate the class average for her Statistics class. She adds together her scores for Exam 1, Exam 2, and Exam 3. She then divides this total by 3. Maria has just calculated her:

a) variance.

b) mode.

c) median.

d) mean.

Chapter 4 3. A parameter is a number based on:

a) the most frequently occurring score in a distribution of scores.

b) the variance of scores.

c) a sample taken from a population.

d) the whole population.

Chapter 4 (Answer)

3. A parameter is a number based on:

a) the most frequently occurring score in a distribution of scores.

b) the variance of scores.

c) a sample taken from a population.

d) the whole population.

Chapter 4

4. What is the median for the following distribution of scores: 2, 2, 8, 10, 27?

a) 2

b) 8

c) 27

d) 9.8

Chapter 4 (Answer)

4. What is the median for the following distribution of scores: 2, 2, 8, 10, 27?

a) 2

b) 8

c) 27

d) 9.8

Chapter 4

5. Which of the following terms best describes the following distribution of scores: 2, 3, 7, 7, 7, 7, 8, 10, 15?

a) unimodal

b) bimodal

c) multimodal

d) all of these

Chapter 4 (Answer)

5. Which of the following terms best describes the following distribution of scores: 2, 3, 7, 7, 7, 7, 8, 10, 15?

a) unimodal

b) bimodal

c) multimodal

d) all of these

Chapter 4

6. Consider the following distribution of scores: 2, 2, 8, 10, 37. Within the context of this distribution, the number 37 would represent:

a) an outlier.

b) the range.

c) the mode.

d) the variance.

Chapter 4 (Answer)

6. Consider the following distribution of scores: 2, 2, 8, 10, 37. Within the context of this distribution, the number 37 would represent:

a) an outlier.

b) the range.

c) the mode.

d) the variance.

Chapter 4

7. Which type of measure of central tendency is most appropriate to use when one particular score dominates a distribution and the data are at the nominal level?

a) the mean

b) the median

c) the mode

d) none of these

Chapter 4 (Answer)

7. Which type of measure of central tendency is most appropriate to use when one particular score dominates a distribution and the data are at the nominal level?

a) the mean

b) the median

c) the mode

d) none of these

Chapter 4

8. Which of the following distribution of scores has a range of 10?

a) 2, 6, 7, 9 10

b) 9, 9, 10, 11, 11

c) 3, 10, 10, 10, 10, 14

d) 102, 103, 104, 105, 106, 112

Chapter 4 (Answer)

8. Which of the following distribution of scores has a range of 10?

a) 2, 6, 7, 9 10

b) 9, 9, 10, 11, 11

c) 3, 10, 10, 10, 10, 14

d) 102, 103, 104, 105, 106, 112

Chapter 4

9. The average of the squared deviations from the mean is referred to as:

a) the standard deviation.

b) the median.

c) the range.

d) the variance.

Chapter 4 (Answer)

9. The average of the squared deviations from the mean is referred to as:

a) the standard deviation.

b) the median.

c) the range.

d) the variance.

Chapter 4

10. To calculate the standard deviation you can:

a) square the variance.

b) take the square root of the variance.

c) square the mean.

d) add up all the scores in the distribution of scores.

Chapter 4 (Answer)

10. To calculate the standard deviation you can:

a) square the variance.

b) take the square root of the variance.

c) square the mean.

d) add up all the scores in the distribution of scores.

Chapter 4

11.The interquartile range may be a better choice than the range if:

a) you have a large set of numbers to work with.

b) your median is larger than your mode.

c) you have an outlier score in your data.

d) your standard deviation is less than zero.

Chapter 4 (Answer)

11.The interquartile range may be a better choice than the range if:

a) you have a large set of numbers to work with.

b) your median is larger than your mode.

c) you have an outlier score in your data.

d) your standard deviation is less than zero.