what am i doing wrong here? calculating standard deviation

Question

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 :^(

You calculated the mean incorrectly: you should have divided by $5$, not by $3$, to get a mean of $3$, not $5$. — Brian M. Scott, Aug 16 '16 at 23:20
What Brian M. Scott said. You should have noticed something wrong when none of the calculated differences in step #2 were negative. — scott, Aug 16 '16 at 23:26
If a bunch of numbers are all less than $5$, then their average cannot be $5$. That's definitely something to be aware of. $\qquad$ — Michael Hardy, Aug 20 '16 at 14:13

score 1 · Accepted Answer · edited Jun 12 '20 at 10:38

1

I corrected it, here it is if anyone is curious haha.

edited Jun 12 '20 at 10:38

Community

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answered Aug 19 '16 at 20:39

NookLines

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what am i doing wrong here? calculating standard deviation

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