SOLUTION: how do i get the equation for this problem? 1,2,9,9,10,11,n range: 13 mode: 9 median: 9 mean: 8

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Question 250815: how do i get the equation for this problem?
1,2,9,9,10,11,n
range: 13 mode: 9
median: 9 mean: 8
Answer by Edwin McCravy(20055) About Me  (Show Source):
You can put this solution on YOUR website!
1,2,9,9,10,11,n
range: 13 mode: 9
median: 9 mean: 8
n = 14

Edwin