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anonymous

  • one year ago

Find the standard deviation of the data set below. Round your answer to three decimal places. 2, 4, 6, 6, 8, 10, 11, 12, 14, 16, 17, 18, 18, 18

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  1. anonymous
    • one year ago
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    would the mean of the data be 11.43 or 11.4

  2. Liv1234
    • one year ago
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    To find the mean you add up all of the numbers and then you divide the sum of the numbers by the amount of numbers you have.

  3. Liv1234
    • one year ago
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    \[2+ 4+ 6+ 6+ 8+ 10+ 11+12+14+ 16+ 17 +18 +18+ 18=160\]

  4. Liv1234
    • one year ago
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    \[160/14=11.42\]

  5. anonymous
    • one year ago
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    yes and 160 divded by 14 is 11.42

  6. Liv1234
    • one year ago
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    Right! So, did you have any options for this question?

  7. anonymous
    • one year ago
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    nope :D

  8. Liv1234
    • one year ago
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    Did it ask you to round your answer?

  9. anonymous
    • one year ago
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    yes but it is asking for the standard deviation

  10. Liv1234
    • one year ago
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    Ohh okay, so your answer to the mean would be 11.42.

  11. anonymous
    • one year ago
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    so now I would have to subtract or add the numbers from 11.42

  12. Liv1234
    • one year ago
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    I think your answer would be 11.42.

  13. anonymous
    • one year ago
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    then i would have to square that result right?

  14. Liv1234
    • one year ago
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    Yes, and then what would you get?

  15. anonymous
    • one year ago
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    hold on I have to do it :)

  16. Liv1234
    • one year ago
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    Okay(:

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