Statistics for the Behavioral Sciences by Frederick J. Gravetter, Larry B. Wallnau ISBN 10: 1305504917 ISBN 13: 9781305504912

SECTION 3.4 | The Mode 85
FIGURE 3.7
A frequency distribution for tone identification
scores. An example of a binomial
distribution.
Frequency
9
8
7
6
5
4
3
2
1
0
1 2 3 4 5 6 7 8 9
Tone Identification Score
(number correct out of 10)
10
LEARNING CHECK
1. During the month of October, an instructor recorded the number of absences
for each student in a class of n 5 20 and obtained the following distribution.
What are the values for the mean, the median, and the mode for this
distribution?
a. Mean = 2.35, Median = 2.5, Mode = 3
b. Mean = 2.5, Median = 3, Mode = 3
c. Mean = 2.35, Median = 3, Mode = 7
d. Mean = 2.5, Median = 2.5, Mode = 7
Number of
Absences
f
5 1
4 2
3 7
2 5
1 3
0 2
2. What is the mode for the following set of n 5 8 scores? Scores: 0, 1, 1, 2, 2,
2, 2, 3
a. 2
b. 2.5
c. 13
8 = 1.625
d. 13
3. For the sample shown in the frequency distribution table, what is the mode?
a. 3
b. 3.5
c. 4
d. 5
X
5 1
4 3
3 4
2 2
1 1
f
ANSWERS
1. A, 2. A, 3. A