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? A. 8.5 years B. 8.6 years C. 9 years D. 12 years

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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? A. 8.5 years B. 8.6 years C. 9 years D. 12 years

Mathematics
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Add the 10 numbers and divide the total by 10 to find the estimated mean. It is an estimate because the times have been rounded to the nearest year.
6.6

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What was your total number of years when you added the 10 numbers?
oh 7.6
which would be b if u round
Right?
You need to redo your addition. Rounding is not necessary to get the answer.
oh, okay. So not the answer.
Could it be that you are guessing and that you did not add the 10 numbers?
i got 7.6
\[\large 3+8+12+9+12+8+12+4+6+12=?\]
i got 98
wait not 86
Yes. 86 is the total. Now divide 86 by 10.
8.6 which is B :D
Yes, you are correct.
Thank you
You're welcome :)

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