81,85,82, 93,85,84,95,87,88,91
Find the standard deviation.
it’s 4.4
Everything im doing a review assignment for school cause ive been out sick for a week and theres several problems with standard deviation and i tried to look on google but no answers came out to what i have on my multiple choice answers.
http://www.mathsisfun.com/data/standard-deviation-calculator.html
Watch out for difference between sample and total population standard deviations. Divide by 9 or divide by 10.
Thanks dayci!!!
what about the formula do you not understand?
There are many handy online calculators that you can use to check your answer.
- find the mean
- take the difference between each of your data values and the mean
- square each of these differences
- add up these squares of differences
- divide by 10
- take the square root
I will not do the arithmetic of that for you