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Grade 9 Mean Deviation Worksheet

Understand and calculate mean deviation for various data sets.

Grade 9 Math Probability and StatisticsMean Deviation
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Includes

4 Short AnswerFill in the BlanksMultiple ChoiceTrue / False

Standards

CCSS.MATH.CONTENT.HSS.ID.A.3

Topics

mathgrade 9mean deviationstatistics
9 sections · Free to use · Printable
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Grade 9 Mean Deviation Worksheet

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Date:

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Read each question carefully and show all your work. Calculate the mean deviation for each data set as required.

1. Explain in your own words what mean deviation measures about a data set.

2. Mean deviation is the average of the absolute differences between each data point and the   of the data set.

3. A higher mean deviation indicates that the data points are generally   spread out from the mean.

4. Calculate the mean deviation for the following data set: 5, 8, 10, 12, 15

5. Which of the following is NOT a measure of dispersion?

a

Range

b

Mean Deviation

c

Median

d

Standard Deviation

6. A student recorded the following scores on 5 math tests: 75, 80, 85, 90, 70. Find the mean deviation of these scores.

7. A mean deviation of zero implies that all data points in the set are identical.

T

True

F

False

8. Two different classes took the same math quiz. Class A had scores: 60, 70, 80, 90, 100. Class B had scores: 78, 80, 82, 80, 80. Calculate the mean deviation for each class and determine which class had more consistent scores.