Download NOTES: Mean Absolute Deviation

Name ________________________________________ Date __________________ Class __________________
NOTES:
LESSON
15-1
Mean Absolute Deviation
Mean Absolute Deviation (MAD) - means the distance between each data value
and the mean of the entire data set.
Steps:
1. Find the Mean (average of the data set)
2. Subtract each data point from the Mean (average) and record that value.
3. Find the Mean (average of the numbers you recorded when you subtracted.
4. The smaller this value is, means the entire data set is very close or has little variation.
Find the mean absolute deviation for each data set.
1. The number of kittens in 10 litters: 4, 5, 5, 6, 6, 7, 8, 8, 8, and 9
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2. The number of approved soy-based containers produced in 10 stamping runs of 240
containers: 225, 227, 227, 228, 230, 230,
231, 238, 238, and 240
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3. Two bowlers bowl the following number of strikes in 9 games.
1st bowler
2
nd
bowler
8
5
5
6
8
7
4
7
6
10
6
8
8
5
5
6
8
9
What is the mean and the mean absolute deviation of the number of strikes of each
bowler?
Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
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Name ________________________________________ Date __________________ Class __________________
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What does the mean absolute deviation suggest about each bowler’s consistency?
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Original content Copyright © by Houghton Mifflin Harcourt. Additions and changes to the original content are the responsibility of the instructor.
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