Measures of Variability Lesson

Measures of Variability Lesson

Elizabeth Borres

Review :

the Range, Median, IQR

Multiple Choice

Find the median for the set of numbers:

23, 37, 11, 58, 13, 45

• 30

• 23

• 37

• 28

Multiple Choice

Find the range of the data.

63, 71, 65, 66, 87, 53

• 32

• 33

• 34

• 35

Multiple Choice

Find the median, first quartile, third quartile, and interquartile range of the data.

23, 33, 25, 16, 27, 43, 29, 40, 35

• Median: 29

  First Quartile: 24

  Third Quartile: 37.5

  IQR: 13.5

• Median: 27

  First Quartile: 25

  Third Quartile: 35

  IQR: 10

• Median: 29

  First Quartile: 25

  Third Quartile: 37.5

  IQR: 12.5

• Median: 27

  First Quartile: 24

  Third Quartile: 35

  IQR: 11

Multiple Choice

Find the median, first quartile, third quartile, and interquartile range of the data.

203, 183, 212, 181, 157, 204, 189, 190

• Median: 189

  First Quartile: 182

  Third Quartile: 203

  IQR: 21

• Median: 189.5

  First Quartile: 182

  Third Quartile: 203

  IQR: 21

• Median: 189

  First Quartile: 182

  Third Quartile: 203.5

  IQR: 21.5

• Median: 189.5

  First Quartile: 182

  Third Quartile: 203.5

  IQR: 21.5

Multiple Choice

Find the median, first quartile, third quartile, and interquartile range of the data.

32, 53, 72, 66, 47, 54, 49, 67, 71

• Median: 54

  First Quartile: 49

  Third Quartile: 67

  IQR: 18

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 21

• Median: 54

  First Quartile: 48

  Third Quartile: 69

  IQR: 22

• Median: 54

  First Quartile: 49

  Third Quartile: 69

  IQR: 20

Poll

Do you have any questions?

At the end of the lesson, the students will be able to:

1. Calculate the Median, Range, MAD, Variance, Standard Deviation and Coefficient of Variations.

How to find the MAD?

(MEAN ABSOLUTE DEVIATION)