I Am Lost With This Question Please Show How You Would Work This Out I Get Lost

Please help with business analysis 2372 homework. I am lost with this question. Please show how you would work this out. I get lost with that many numbers.

The following data on the weekly online gaming time (in hours) of a sample of college students is as follows:

5, 11, 25, 19, 18, 20, 27, 13, 8, 10, 15, 19, 18, 9, and 12.

Compute the sample mean to one decimal place. 

 

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