Question

How do I find standard deviation

Answer 1

2, 4, 6, 8, 10
a.
2.83
c.
6.32
b.
8
d.
64

Answer 2

Use this nifty equation \(s=\large \sqrt{\frac{\sum (x_1-\overline{x})^2}{n-1}}\)


First, find the average [ \(\overline{x}\) ]

Answer 3

Ive never done Standard deviation, I'm ahead of others. I don't even know what that equation is

Answer 4

That's the standard deviation formula

I am telling you what to do so that you know what to to in the future, find the average of the numbers they gave you

Answer 5

I think it would be wise to explain how that equation works

Start with the (x - xbar) part. The x bar is the x with the horizontal line on it. xbar is the mean of the list. So start by finding the mean.

x is a value from the list. Start with the first value, 2. Subtract x - xbar, or in other words, 2 - the mean. Then according to the equation you square the result

Answer 6

The E-looking sign in front is a sigma sign which means sum of a list of items. Basically you repeat the above process for 4, 6, etc. and sum the results

Answer 7

Ok so that gives you the numerator in the equation. Now the denominator is n - 1 where n is just the number of items in your list (5)

Answer 8

Now you have the denominator and the numerator. Divide numerator over denominator then take the square root of the result

Answer 9

Hope that makes sense

On my phone so I apologize for any typos or weird formatting

Answer 10

Oh come on guys I deserve at least one medal for typing all this out