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Math Help - Finding the standard deviation

  1. #1
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    Finding the standard deviation

    OKay it gives me N ( 42 ) Xbar ( 9.27 ) and s ( .44 ) but i don't know which formula to use to get the standard deviation out of this. Please help! It's 2 14 in the morning and i need it for class tomorrow!.
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  2. #2
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    Quote Originally Posted by ansimax View Post
    OKay it gives me N ( 42 ) Xbar ( 9.27 ) and s ( .44 ) but i don't know which formula to use to get the standard deviation out of this. Please help! It's 2 14 in the morning and i need it for class tomorrow!.
    Do you mean n = 42 (sample size) and \bar{x} = 9.27 (sample mean) ? And s = 0.44?

    Can you define exactly what s ( .44) means please .... If it means what I think it means, then the answer you want is contained in your question ....
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  3. #3
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    yes n is the sample size but the little s is not standard deviation, it said the standard deviation was the little circle with a line on the top of it, i can't remember the name of it
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