The following is a frequency distribution of grades of a sample of statistics examinations. Grade Frequency 50
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Question:
The following is a frequency distribution of grades of a sample of statistics examinations.
Grade Frequency
50 - 59 7
60 - 69 10
70 - 79 22
80 - 89 15
90 - 99 6
Compute the following measures:
a. The mean
b. The variance
c. The standard deviation
d. The coefficient of variation
Related Book For
Business Statistics in Practice
ISBN: 978-0077404741
6th edition
Authors: Bruce Bowerman, Richard O'Connell
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