To calculate: The mean deviation of the test scores.
Answer to Problem 9MCQ
The mean deviation of scores is
Explanation of Solution
Given information:
Formula used:
The arithmetic mean of the absolute values of the deviations from the mean of a set of data is called the mean deviation.
Formula of Mean
Calculation:
Consider the data in ascending order,
So,
The mean of the data is
The mean deviation is −
54 | 70 | |
55 | 70 | |
62 | 70 | |
64 | 70 | |
65 | 70 | |
71 | 70 | |
75 | 70 | |
76 | 70 | |
77 | 70 | |
78 | 70 | |
79 | 70 | |
80 | 70 | |
82 | 70 | |
84 | 70 | |
85 | 70 | |
86 | 70 | |
87 | 70 | |
88 | 70 | |
89 | 70 | |
90 | 70 | |
92 | 70 | |
93 | 70 | |
95 | 70 | |
96 | 70 | |
98 | 70 | |
99 | 70 | |
Hence, the mean deviation is
Chapter 14 Solutions
Advanced Mathematical Concepts: Precalculus with Applications, Student Edition
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