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q. 3 part (a)

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Problem:
Turtles can live a long time. This stem-and-leaf plot shows the ages (in years) of the turtles in the reptile house of the Kalamazoo Zoo:
$$ \begin{array}{c | c@{~~}c@{~~}c@{~~}c@{~~}c@{~~}c} 0 & 1 & 1 & 2 & 5 & 6 & 7 \\ 1 & 0 & 0 & 3 & 8 & 9 & \\ 2 & 0 & 4 & 6 & 7 && \\ 3 & 1 & 6 &&&& \\ 4 &&&&&& \\ 5 & 4 &&&&& \\ 6 & 3 & 7 &&&& \end{array} $$
What is the average age of the turtles (in years)?
 May 28, 2015

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 #1
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( 1 + 1 + 2 + 5 + 6 + 7 + 10 + 10 + 13 + 18 + 19 + 20 + 24 + 26 + 27 + 31 + 36 + 54 + 63 + 67 ) / 20 =

 

22 years

 

 

 May 28, 2015

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