Question

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

Answer 1

@amberosales

Answer 2

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.

Answer 3

6.6

Answer 4

What was your total number of years when you added the 10 numbers?

Answer 5

oh 7.6

Answer 6

which would be b if u round

Answer 7

Right?

Answer 8

You need to redo your addition. Rounding is not necessary to get the answer.

Answer 9

oh, okay. So not the answer.

Answer 10

Could it be that you are guessing and that you did not add the 10 numbers?

Answer 11

i got 7.6

Answer 12

\[\large 3+8+12+9+12+8+12+4+6+12=?\]

Answer 13

i got 98

Answer 14

wait not 86

Answer 15

Yes. 86 is the total. Now divide 86 by 10.

Answer 16

8.6 which is B :D

Answer 17

Yes, you are correct.

Answer 18

Thank you

Answer 19

You're welcome :)