Question 1202736
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Add up the values. 
Then divide by the sample size n = 34.


I recommend using a spreadsheet or GeoGebra.
The command "SUM" quickly will add the values. 
You should get a sum of 2666.


mean = sum/n
mean = 2666/34
mean = 78.4117647058823
mean = 78.412



Answer: <font color=red>78.412</font>  (approximate)
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