CK-12-Basic Probability and Statistics Concepts - A Full Course

(Marvins-Underground-K-12) #1

http://www.ck12.org Chapter 5. Measures of Central Tendency


The number found before the 5.5 position is 4, and the number found after the 5.5 position is 6.


1 , 1 , 3 , 4 , 4 , 6 , 7 , 8 , 9 , 11


This means that the median is^4 + 26 =^102 =5.


Example B


The amount of money spent by each of 15 high school girls for a prom dress is shown below:


$250 $175 $325 $195 $450 $300 $275 $350 $425


$150 $375 $300 $400 $225 $360


What is the median price spent on a prom dress?


$150 $175 $195 $225 $250 $275 $300 $300 $325 $350 $360 $375


$400 $425 $450


The prices have been organized from least to greatest, and the number of prices is an odd number. Therefore, the
median will be in then+ 21 position:n+ 21 =^152 +^1 =^162 =8.


The median price is $300, which is the 8thposition.


Example C


The following table shows the number of goals scored by Ashton during each of 26 hockey games. What is the
median number of goals scored by Ashton during a game?

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