The mean of the numbers 8, 12, 13, 15, 17, 19 and y is 16. what is y?

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Answer 1 · 2018-06-13T05:06:47

28

To calculate an average, you add all the values and then divide by the number of values, so

#(8+12+13+15+17+19+y)/7=16#

Now simplifying the known numbers,

#(84+y)/7=16#

Multiply both sides by 7 and then subtract 84

#84+y=112#

#y=28#