Concept explainers
To calculate: The mode of the test scores.
Answer to Problem 7MCQ
The mode of scores is
Explanation of Solution
Given information:
Formula used:
The mode of a set of data is the most frequent value. Some sets of the data have multiple modes and others have no mode.
Calculation:
Consider the data in ascending order,
Now, making the frequency table
Scores | Frequency |
54 | 1 |
55 | 1 |
62 | 2 |
64 | 1 |
65 | 1 |
71 | 1 |
75 | 1 |
76 | 1 |
77 | 1 |
78 | 1 |
79 | 1 |
80 | 1 |
82 | 1 |
84 | 1 |
85 | 1 |
86 | 1 |
87 | 1 |
88 | 1 |
89 | 3 |
90 | 1 |
92 | 1 |
93 | 2 |
95 | 1 |
96 | 1 |
98 | 1 |
99 | 1 |
Re-arranging the data in frequency table
Class Intervals | Frequency |
The highest repeated score is 89.
Therefore, the mode is 89.
Chapter 14 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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