Mean Absolute Deviation

Question 1

The mean for the data in the dot plot is 5. What is the absolute deviation for the data point at 7?

Revolt · Accepted Answer

2

Question 2

Tammy was correct. She earned a 92! The new mean absolute deviation of her homework scores now that they are 68, 76, 70, 74, and 92 is: .

Revolt · Accepted Answer

6.4

Question 3

The mean of the data set shown in the table is 57. What is the mean absolute deviation?

Revolt · Accepted Answer

9

Question 4

The hours students reported practicing their instruments last grading quarter were 29, 20, 36, 44, 30, 32, and 40.The mean hours students reported practicing their instruments is . The mean absolute deviation for the data is .

Revolt · Accepted Answer

Selection 1: 33; Selection 2: 6

Question 5

In which step did Rin make an error?

Revolt · Accepted Answer

3

Question 6

Which statements are true about mean absolute deviation? Select all that apply.

Revolt · Accepted Answer

The mean absolute deviation is impacted by outliers.; The mean absolute deviation is a measure of variation, or spread, of the data.; The higher the mean absolute deviation is, the more spread out the data points are from the mean.

Question 7

Without calculating any statistics, Gabriel knew that data Set 3 would have the lowest mean absolute deviation among the three sets. How does he know?

Revolt · Accepted Answer

Because Set 1 and Set 2 contain outliers.

Question 8

Question 9

Revolt · Accepted Answer

.: 1.25; .: 1.5; the mean than the data for people with a high school diploma.: clustered around

Question 9

Tammy’s last four homework scores were 68, 76, 70, and 74. The mean absolute deviation of her scores is . Tammy worked hard on yesterday’s assignment and feels confident that this homework score will be at least a 90. Predict what will happen to her mean absolute deviation if she is correct: . Tammy was correct. She earned a 92! The new mean absolute deviation of her homework scores now that they are 68, 76, 70, 74, and 92 is: .

Revolt · Accepted Answer

3; Selection 1: 3; Selection 2: It will go up.; Selection 3: 6.4

Question 10

Tammy worked hard on yesterday’s assignment and feels confident that this homework score will be at least a 90. Predict what will happen to her mean absolute deviation if she is correct: .

Revolt · Accepted Answer

It will go up.

Mean Absolute Deviation Answers

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