statisticsWere did i go wrong thank you

Find the range and the standard deviation (correct to two decimal places).
83, 96, 100, 100, 106=divided by 5=97
I did the
(83-97)+(96-97)+(100-97)+(100+97)=106-97)= I know I add than divide by 5 and I can not come up with Standard deviation. Where am I wrong.

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  1. The differences SQUARED

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    posted by Damon
  2. then take the square root, then divide by n

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    posted by Damon
  3. http://www.mathsisfun.com/data/standard-deviation-calculator.html

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    posted by Damon
  4. then divide by n
    then take the square root

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    posted by Damon
  5. mean = 97 correct
    difference and square of difference
    -14 196
    -1 1
    3 9
    3 9
    9 81

    sum of squares = 296
    variance = 296/5 = 59.2

    square root of variance = standard deviation = 7.69

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    posted by Damon
  6. Good afternoon Damon, I wish to thank you again for me not understanding that much. Thanks so much for the kindness you show, letting me know how it all comes together so I can do it my self. This is greatly appreciated. Have a wonderful day.

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    posted by Mary Ann
  7. I am happy to help. You are welcome :)

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    posted by Damon

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