Question 676203: How do I figure out a standard deviation and variance? Any easy ways to understand this?
Find the range, standard deviation, and variance for the following sample data: 87,75,58,29,21,19,80,27,61,77,26,16,79,1,68,10
Found 2 solutions by jpvn2015, solver91311:
Answer by jpvn2015(54)   (Show Source):
You can put this solution on YOUR website! Standard deviation and variance can be a little tricky, so I suggest you just read in your math book how to do those types of problems. I know them pretty well, but I won't take any chances.
To find the range, all you have to do is find the highest number and the lowest number in the sequence (since there are no negative numbers, this one is easy).
Thus, in this sequence of numbers, the range is as follows: 87-1 = 86. In other words, this sequence has the potential to cover 86 numbers between the 1 and the 87.
Answer by solver91311(24713)  (Show Source):
You can put this solution on YOUR website!
Variance of a sample:
^2}{n\ -\ 1})
Standard deviation: Square root of the variance
No.
John
Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it
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