Mean, Median, Mode, and Range

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

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

Find the outlier(s) 12, 22, 40, 17, 29, 72, 38 90, 80, 75, 7, 67, 82 101, 210, 184, 18, 156, 989, 204

Matching! Mean Middle Median Difference Mode Most Average Range

13 6 7 Problem 1 Mean = 9 Median = 7 Mode = 6 and 13 Range = 7 Children Ages Harry 13 Ron 6 Hermione 7 Ginny Neville Mean = 9 Median = 7 Mode = 6 and 13 Range = 7

Problem 2 13 7 17 19 15 11 Mean = 12 Median = 12 Mode = 7 Range = 12 Homerooms Pizza Orders Everdeen 13 Mellark 7 Abernathy 17 Snow 19 Coin Hawthorne 15 Trinket 11 Crane Mean = 12 Median = 12 Mode = 7 Range = 12

Visitors to the Art Museum (thousands) 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

2 6 5 4 3 0 1 Problem 4 Snowfall in Inches Mean 3 inches Median Mode 2 6 5 4 3 0 1 Mean 3 inches Median Mode none Range 6 inches

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