maths coursework - please help

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maths coursework - please help

Postby aimee47 » Mon Apr 03, 2006 4:24 pm

please help i've got maths coursework to do, and i can't ask my teacher for help because it was duce in last week, and i told him i'd done it but my printer was broken.

how do you work out standard deviation?
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Postby silver tree » Mon Apr 03, 2006 4:32 pm

Hmm. No idea, I`m far too old to remember things like that. But...

good old google has lots of links including these two:

http://www.robertniles.com/stats/stdev.shtml
http://mathworld.wolfram.com/StandardDeviation.html

Honestly though, if you were having trouble with this you should have just gone and asked your teacher at the beginning - it`s much better to learn directly from them in a classroom rather than from google. :)
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Postby aimee47 » Mon Apr 03, 2006 4:53 pm

lol. i no but my maths teacher scares me. and i though i could work it out for my self :oops: oh how wrong i was.

thanks for the links.
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Postby all_apologies » Mon Apr 03, 2006 6:14 pm

Have you got the question there?
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Postby aimee47 » Mon Apr 03, 2006 6:29 pm

i've got serval lots of number which i have to work out the standard deviation of.
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Postby all_apologies » Mon Apr 03, 2006 7:01 pm

If you post one of the sets of numbers I can show you how you calculate the s.d. and then you can use that as an example to work the rest out by if you like (though those links above pretty much do the same!)
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Postby aimee47 » Mon Apr 03, 2006 10:22 pm

thanks but i've sorted it with one of the links
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Postby GurlRock » Wed Apr 05, 2006 5:36 pm

I think I am doing the same coursework as you. I handed it in but i did not describe the difference in standard deviation.

So, I can't be bothered to do it and was meant to hand it in before the holidays. oops :roll:

What is exactly the problem, i might be able to help :D
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Postby aimee47 » Wed Apr 05, 2006 7:43 pm

i handed it today. my maths teacher said it looked alright. :D i hope so!
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Postby splodge » Tue Apr 11, 2006 1:22 pm

Can someone please help me with my standard deviation? I have to do it for my Biology coursework. I just looked at those sites and they have completely baffled me. I have to go in college on Wednesday and Thursday to give it in. Could someone please please help me ?? :(

ETA: Ive just used the site and I managed to get some different answers than last time which is a plus - as my other ones were insanely wrong. But I still dont know if these ones are right. I got a 0 value for one, that cant be right can it?
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Postby umistgirl » Tue Apr 11, 2006 2:08 pm

You'll only get a value of 0 if all your values are exactly the same! Hence you may need to look at that again.
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Postby splodge » Tue Apr 11, 2006 3:11 pm

Edited:

Never mind I'll just give it in like this :)
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Postby GurlRock » Tue Apr 18, 2006 1:24 pm

The higer the standard deviation, the more spread out the data is.

I would right down the formula but can't!

I wish I could show you this book my teacher has given me!!!!
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