Brendan selected 10 sixth-year students in his school at random and asked each person how many years the person had lived at his or her current address. He recorded the results.
3, 8, 12, 9, 12, 8, 12, 4, 6, 12
What is the estimated mean number of years that a sixth-year student had lived at his or her current address?
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Finding the mean is also finding the average.
To find the mean, you need to add up all the results
3 + 8 + 12 + 8 + 12 + 4 + 6 + 12 = 86
Now divide 86 by the total results which is 10.
86 / 10 = 8.6
8.6 is your answer
uh... yeah... you just answered your own question. your answer looks good to me