Chapter 9 Review - Big Ideas

Part I: Is the following question statistical or non statistical?

"What pets does our class have?"

• Statistical

• Non statistical

Part II: After deciding what type of question this is... statistical or non statistical. Explain the why to this question... "What pets does our class have?"

• Only one answer

• Answers will vary

Display the data in a dot plot. Identify any clusters, peaks, or gaps in the data.

• Most of the data cluster around 22. There is a peak at 22 and gaps between 6 and 12 and between 23 and 35.

• Most of the data cluster around 19. There is a peak at 19 and gaps between 5 and 10 and between 17 and 45.

• Most of the data cluster around 16. There is a peak at 16 and gaps between 2 and 12 and between 19 and 45.

• Most of the data cluster around 12. There is a peak at 16 and gaps between 2 and 8 and between 25 and 45.

Tags

CCSS.6.SP.A.2

CCSS.6.SP.B.4

CCSS.6.SP.B.5

Find the mode of these numbers:

4, 3, 6, 4, 3, 6, 6, 3, 2, 1, 3

• 3

• 6

• 4

• 3 and 4

Find the mean of the data 55, 65, 49, 22, 56, 65, 61, 57

• mean: 22

• mean: 56

• mean: 56.5

• mean: 53.75

Find the median of the data 55, 65, 49, 22, 56, 65, 61, 57

• median: 65

• median: 56

• median: 56.5

• median: 53.75

Find the mode of the data 55, 65, 49, 22, 56, 65, 61, 57

• mode: 65

• mode: 56

• mode: 56.5

• mode: None

Find the range.
5, 15, 10, 20, 15, 10, 15

• 5
• 10
• 15
• 13

Find the median of the data. 32, 53, 72, 66, 47, 54, 49, 67, 71

• median: 56.77

• median: 54.5

• median: 54

• median: 53

Find the first quartile of the data. 32, 53, 72, 66, 47, 54, 49, 67, 71

• first quartile: 48

• first quartile: 47.5

• first quartile: 49

• first quartile: 32