Mean and MAD

What does M.A.D stand for?

• Mean as Dirt

• Mean Average Deviation

• Crazy

• Mean Absolute Deviation

What is another word for average?

• Mean
• Median
• Mode
• Range

What is the mean of this data set?
6, 7, 2, 1, 5, 2, 1, 6

• 24.75
• 3
• 3.7
• 3.8

What is Mean Absolute Deviation?

• The mean of the data

• The absolute value of the mean

• The variation of data values around the mode

• The average distance between the data values and the mean

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

• 3
• 5
• 1
• 2

Find the Mean Absolute Deviation:  5, 11, 2, 7, 16.  The Mean is 8.2 

• 3.2
• 2.8
• 1.2
• 4.2

What is another word for average?

• Mean
• Median
• Mode
• Range

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? 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