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Math 15 – Elementary Statistics Chapter 5 – Part 2 Summarizing Data Numerically.

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Presentation on theme: "Math 15 – Elementary Statistics Chapter 5 – Part 2 Summarizing Data Numerically."— Presentation transcript:

1 Math 15 – Elementary Statistics Chapter 5 – Part 2 Summarizing Data Numerically

2 Measuring Spread Class A – 73, 74, 75, 76, 77 Class B – 55, 65, 75, 85, 95

3 Measuring Spread Class A – 73, 74, 75, 76, 77 Class B – 55, 65, 75, 85, 95

4 Variance and Standard Deviation

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8 Example

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11 Percentiles

12 Exam Scores – 32, 35, 43, 56, 66, 69, 73, 74, 75, 77, 78, 79, 80, 81, 83, 85, 87, 88, 92, 98 Median (50 th percentile) Quartiles (25 th and 75 th percentiles)

13 Percentiles Exam Scores – 32, 35, 43, 56, 66, 69, 73, 74, 75, 77, 78, 79, 80, 81, 83, 85, 87, 88, 92, 98 90 th percentile?

14 IQR and 5 – Number Summary

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16 Outliers?

17 Yuck? What are you learning here?

18 Example

19 Arcata Real Estate – Described Numerically and Graphically!


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