<PRE><B>Question 321278</B>
 The ages (in years) of seven people and the number of days they spent recovering in the hospital after surgery are given in the following table. 
Age, x 12 21 38 44 59 63 70 
Days in Hospital, y 4 6 7 5 9 11 12 


Calculate the correlation coefficient, r. 
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Ans: r = 0.8948
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Cheers,
Stan H.</PRE>