Mean, MAD, and Other Measures

Finding MAD

100

What does each letter of MAD stand for?

Mean Absolute Deviation

200

Find the MAD: 10, 7 , 13, 10, 8

1.68 / 1.7

300

Find the MAD: 110, 114, 104, 108, 106

2.88 / 2.9

400

Define: MAD

The average distance each data point is away from the MEAN

500

Find the MAD: 15, 17, 15, 17, 21, 17, 15, 23, 20, 18

2.16 / 2.2

Finding Mean

100

Find the Mean. 35, 56, 34, 44, 52, 12, 34, 45

Mean = 39

200

Find the Mean. 24, 34, 32, 16, 45, 38, 28

Mean = 31

300

Define: Mean

Average

400

Find the Mean. 86, 24, 65, 65, 24, 24

Mean = 48

500

Find the Mean. 32, 23, 22, 33, 33, 23, 32, 23, 22

Mean = 27

Median, Range

100

Find the Median & Range. 35, 56, 34, 44, 52, 12, 34, 45

Median = 39.5  Range = 44

200

Find the Median & Range. 24, 34, 32, 16, 45, 38, 28

Median = 32  Range = 29

300

Find the Median & Range. 86, 24, 65, 65, 24, 24

Median = 44.5  Range = 62

400

Find the Median & Range. 32, 23, 22, 33, 33, 23, 32, 23, 22

Median = 23 Range = 11

500

Define: Median & Range

Median : Middle Number

Range: The distance the data set covers

Which one would I use?

100

You want to find the average height of a basketball team. Which measure would you use?

Mean

200

To determine the difference between the shortest and tallest person on a basketball team, which measure would you use?

Range

300

You have a range of answers from a particular survey. You are trying to figure out the middle of the data. Which measure would be most appropriate?

Median

400

You survey a group of people asking them how long it takes them to get to work. You get an average time of 24 minutes. You want to know how different that is from each person. What measure would you use?

MAD (Mean Absolute Deviation)

500

What measure of center does an outlier usually affect the most?

The mean