Mean Absolute Deviation Worksheet PDF

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Mean Absolute Deviation

Name: _______________________

Worksheet

Date: _______ Color: __________

1. What is the mean absolute deviation of the following data set?

{3, 4, 7, 10}

First, one must calculate the mean. What is the mean?___________ Second, calculate the absolute value of the difference (or the distance) between each data value and the mean.

Finally, find the mean of each of these differences. ____________ This is the mean absolute deviation. 2. The weights of several adult guinea pigs in a pet store are: 33, 39, 42, 33 39, 31, 32 and 37 ounces. Find the mean absolute deviation. Describe what the mean absolute deviation tells you about the data.

3. What is the mean absolute deviation of the following set? {23, 24, 29, 30, 38, 48}

4. Find the mean absolute deviation for: Cost of books in dollars: 4, 15, 8, 4, 6, 11, 1, 7, 3, 1

5. The table below shows Leland’s bowling scores during two different months of his bowling league. Find the mean absolute deviation for each set of data. Round to the nearest hundredth. Then write a few sentences comparing their variation. Leland’s Bowling Scores September April 98

10

11

95

3 90

6 11

121

8 94

10 1

112

118

14

13

12

5 10

0 118

5 12

5 15

2

0

6. Bob and Sue were two students who were having a friendly argument about who had been more consistent in their math quiz grades. Bob had scored: 80, 90, 95, 85 & 70 on his quizzes. While Sue had scored: 70, 75, 90, 100, & 95 on hers. Find the mean absolute deviation for each of them and then answer the two questions: Bob’s mean: _________

Sue’s mean: __________

Bob’s MAD: __________

Sue’s MAD: __________

Who’s doing better on the quizzes? __________ Who’s more consistent in their quiz scores? ____________...