Mean and Mad Practice

What is the first step to solving for the Mean Absolute Deviation?

• Find the mean of the new set of numbers

• Find the mean of the given data set

• Subtract the mean from each original data point

What is the second step to solving for the Mean Absolute Deviation?

• Find the mean of the new set of numbers

• Find the mean of the given data set

• Subtract the mean from each original data point

What is the last step to solving for the Mean Absolute Deviation?

• Find the mean of the new set of numbers

• Find the mean of the given data set

• Subtract the mean from each original data point

What is the definition of the Mean Absolute Deviation?

• A data set is the average distance between each data value and the mean

• The average of the numbers

• The difference between the lowest and highest values

• The "middle" value in the list of numbers

Find the MAD:
58, 38, 54, 48, 26, 36

• 43

• 20

• 10

• 12

Find the Mean Absolute Deviation:  10, 9, 3, 8, 10.  The Mean is 8

• 3

• 5

• 1

• 2

Which mean absolute deviation would have a greater variability or spread?  4.2 or 8.5?

• 4.2

• 8.5

Which mean absolute deviation would be more consistent (less spread)? 4.2 or 8.5?

• 4.2

• 8.5

True or false? :The larger the Mean Absolute Deviation the more consistent the data is.

• True

• False

Which M.A.D. would show the most variability or spread?

• .5

• 1

• 1.5

• 2