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Mathematics 13 Online
OpenStudy (anonymous):

how do I find the standard error (standard deviation)? 22, 10, 7, 5, 12, 1, 11, 24, 5, 10, 12, 5, 17, 13, 12, 8, 6, 16, 21, 3 Find the standard error (standard deviation).

OpenStudy (noelgreco):

Start by calculating the mean

OpenStudy (anonymous):

i found the mean and the median... mean=11 median=10.5

OpenStudy (anonymous):

|dw:1348526273816:dw|

OpenStudy (anonymous):

wtf is that?

OpenStudy (anonymous):

im not sure but i think the sd is 1.28 or 6.25

OpenStudy (anonymous):

did anybody get anything close to that?

Directrix (directrix):

@uh_oh_boy23 The formula above is for finding the standard deviation. Are you allowed to use technology in your work? I did not get the same standard dev that you did.

OpenStudy (anonymous):

actually im taking an econ class ... so statistics isnt the main focus.. so he doesnt mind us using technology

OpenStudy (anonymous):

im a bit confused between the standard deviation and the standard error

OpenStudy (anonymous):

Just plug the numbers into the formula I gave you its very simple and easy

Directrix (directrix):

Oh, I thought you were using the terms as if they were the same. -->Find the standard error (standard deviation).

OpenStudy (anonymous):

i think he is using the terms as if they are the same

OpenStudy (anonymous):

|dw:1348526738874:dw|

OpenStudy (anonymous):

i got 134

OpenStudy (anonymous):

what did u guys get?

OpenStudy (anonymous):

2.66?

OpenStudy (anonymous):

2.655679118

OpenStudy (anonymous):

Are you plugging what I told you into a calculator?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

Otherwise your not gonnaget it How are you solving this?

OpenStudy (anonymous):

i plugged in the numbers into the equation you gave

OpenStudy (anonymous):

6.6217

OpenStudy (anonymous):

i got \[\sqrt{134/20-1}

OpenStudy (anonymous):

6.253

OpenStudy (anonymous):

thats what i got at first ... 6.25

OpenStudy (anonymous):

or is it 6.4 I dunno around tehre

OpenStudy (anonymous):

I think 6.253

OpenStudy (anonymous):

|dw:1348527357398:dw|

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