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Mean, Median, Mode, and Range SOL 6.19

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Measures of Central Tendency Circle the measures of central tendency below. (Hint: There are only 3 measures of central tendency.) Mean Median Mode Range

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What’s an outlier?! outlier out- pref. In a way that surpasses, exceeds, or goes beyond: outdistance. -er suff. One that undergoes a specified action: broiler. lie verb. to be found or located in a particular area or place: The fault lies here. –noun 1. a person or thing that lies outside. number

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Find the outlier(s) 1.12, 22, 40, 17, 29, 72, 38 2.90, 80, 75, 7, 67, 82 3.101, 210, 184, 18, 156, 989, 204

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Matching! Mean Range Mode Median Middle Most Difference Average

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Problem 1 ChildrenAges Andrew13 Robin6 Betty7 Orlando6 Amy13 Mean = 9 Median = 7 Mode = 6 and 13 Range = 7

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Problem 2 Homerooms Pizza Orders Moore13 Ragland7 McNeill17 Pettus19 Powell7 McConahey15 Crews11 Clarke7 Mean = 12 Median = 12 Mode = 7 Range = 12

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Problem 3 Visitors to the Art Museum (thousands) 3 11 5 4 5 3 6 3 12 2 2 4 Mean = 5,000 Median = 4,000 Mode = 3,000 Range = 10,000

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Problem 4 Snowfall in Inches 2654 3 01Mean 3 inches Median Modenone Range 6 inches

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Problem 5 Quiz Grades 72608068Quiz Grades 72608068 7286 Mean73 Median72 Mode72 Range26

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Summary of the Measures of Central Tendency Measures of Central Tendency Best used to describe data when… Mean Median Mode The data has no outliers The data has outliers The data has many repeated numbers

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