81,85,82, 93,85,84,95,87,88,91

Question

Find the standard deviation.

Answer 1

what about the formula do you not understand?

There are many handy online calculators that you can use to check your answer.

Answer 2

- 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

Answer 3

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.

Answer 4

http://www.mathsisfun.com/data/standard-deviation-calculator.html

Answer 5

Watch out for difference between sample and total population standard deviations. Divide by 9 or divide by 10.

Answer 6

it’s 4.4

Answer 7

Thanks dayci!!!