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I keep getting 2.02 for the standard deviation but the answer is 0.28? I'm not sure what I'm doing wrong, I even followed a step-by-step way to calculate it and I'm stilling get it wrong haha :^(

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    $\begingroup$ You calculated the mean incorrectly: you should have divided by $5$, not by $3$, to get a mean of $3$, not $5$. $\endgroup$ – Brian M. Scott Aug 16 '16 at 23:20
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    $\begingroup$ What Brian M. Scott said. You should have noticed something wrong when none of the calculated differences in step #2 were negative. $\endgroup$ – scott Aug 16 '16 at 23:26
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    $\begingroup$ WOW YIKES I did not notice that. Thanks! $\endgroup$ – NookLines Aug 16 '16 at 23:29
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    $\begingroup$ If a bunch of numbers are all less than $5$, then their average cannot be $5$. That's definitely something to be aware of. $\qquad$ $\endgroup$ – Michael Hardy Aug 20 '16 at 14:13
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I corrected it, here it is if anyone is curious haha.

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