Big Ideas Chapter 9 Data

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

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

"How many ceiling tiles are in our classroom?"

• Statistical

• Non Statistical

Part II: After deciding what type of question this is... statistical or non statistical. Explain the why to this question... "How many ceiling tiles are in our classroom?"

• 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.

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

Choose the measure that best represents the data. 55, 65, 49, 22, 56, 65, 61, 57

• mean

• median

• mode