Ch. 9 and 10 Review

Measures of Center

100

Find the mode. 100, 75, 90, 80, 110, 102

No mode.

200

Find the median. 20, 4, 17, 8, 12, 9, 5, 20, 13

12

300

Find the median. 3, 5, 7, 9, 11, 3, 8

5.5

400

Find the mode. 4, 5, 6, 4, 4, 5, 3, 5

4 and 5

500

Find the mean, median, and mode.  85, 77, 211, 88, 91, 84, 85

Mean = 103 Median = 85 Mode = 85 

Measures of Variation

100

Find the range. 5, 7, 10, 2, 1, 7, 5

9

200

Find the 1st and 3rd quartiles. 40, 33, 37, 54, 41, 34, 27, 39, 35

1st Q = 33.5 3rd Q = 40.5

300

Find the Interquartile Range 40, 33, 37, 54, 41, 34, 27, 39, 35

IQR = 7

400

Find the IQR using Box Plot H.

110

500

Find the range using Dot Plot B.

12

Mean and MAD

100

Find the mean. 2, 5, 8, 10, 3, 2, 1, 1

4

200

Find the mean. 49, 62, 52, 54, 61, 70, 55, 53

57

300

Find the Mean Absolute Deviation. 1, 2, 2, 2, 4, 4, 4, 5

1.25

400

Find the Mean Absolute Deviation. 61, 61, 61, 61, 61, 61, 61, 61

0

500

Find the Mean Absolute Deviation. Round your answer to the nearest tenth. 103, 171, 115, 165, 124, 170, 125

25.4

Dot Plots and Box Plots

100

Identify a cluster on Dot Plot A.

There is a cluster between 75 and 95.

200

Identify a gap on Dot Plot B.

There is a gap between 21 and 27.

300

Determine the median using Dot Plot C.

1.5

400

Use Box Plot G. What is the range?

13

500

Use Box Plot G. What is the IQR?

5

Statistics and Shape

100

Describe the shape of distribution for Box Plot H.

Symmetric

200

Describe the shape of distribution for Histogram F.

Skewed left.

300

Describe the shape of distribution for Dot Plot C.

Skewed right.

400

Describe the shape of distribution for Dot Plot E.

Symmetric

500

Describe the shape of distribution on Histogram D.

Skewed left