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gabbyalicorn

  • one year ago

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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  1. gabbyalicorn
    • one year ago
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    @amberosales

  2. kropot72
    • one year ago
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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.

  3. gabbyalicorn
    • one year ago
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    6.6

  4. kropot72
    • one year ago
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    What was your total number of years when you added the 10 numbers?

  5. gabbyalicorn
    • one year ago
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    oh 7.6

  6. gabbyalicorn
    • one year ago
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    which would be b if u round

  7. gabbyalicorn
    • one year ago
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    Right?

  8. kropot72
    • one year ago
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    You need to redo your addition. Rounding is not necessary to get the answer.

  9. gabbyalicorn
    • one year ago
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    oh, okay. So not the answer.

  10. kropot72
    • one year ago
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    Could it be that you are guessing and that you did not add the 10 numbers?

  11. gabbyalicorn
    • one year ago
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    i got 7.6

  12. kropot72
    • one year ago
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    \[\large 3+8+12+9+12+8+12+4+6+12=?\]

  13. gabbyalicorn
    • one year ago
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    i got 98

  14. gabbyalicorn
    • one year ago
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    wait not 86

  15. kropot72
    • one year ago
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    Yes. 86 is the total. Now divide 86 by 10.

  16. gabbyalicorn
    • one year ago
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    8.6 which is B :D

  17. kropot72
    • one year ago
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    Yes, you are correct.

  18. gabbyalicorn
    • one year ago
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    Thank you

  19. kropot72
    • one year ago
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    You're welcome :)

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