anonymous
  • anonymous
HELP! 2 math questions that i've been stuck on for ages!! need answers quick!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
@jim_thompson5910 @satellite73 @henryarias5
anonymous
  • anonymous
@LilyKitty
anonymous
  • anonymous
@Directrix @cwrw238

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Preetha
  • Preetha
It is a little difficult to see the problem. I suggest you close this and just type it out.
anonymous
  • anonymous
You can click on it and zoom it in though.. @Preetha
Directrix
  • Directrix
I see 3 problems. Which two of these do you want to work on? @icedancerfigureskater
anonymous
  • anonymous
The two with charts attached, so 4 and 5. @Directrix
anonymous
  • anonymous
do you know the formula for r?
anonymous
  • anonymous
no @pgpilot326
anonymous
  • anonymous
why not? seems you should know it or have access to it to do thses types of problems. i can write for you if you'd like but it might be better if you had it in a book
anonymous
  • anonymous
can you write it out? @pgpilot326
anonymous
  • anonymous
\[r=\frac{ \sum{ xy }-n\bar{x}\bar{y}}{(n-1)s _{x}s _{y}}\]
anonymous
  • anonymous
wow okay so how can i use that to solve my first problem?
anonymous
  • anonymous
do you know what r is?
anonymous
  • anonymous
do you have a calculator... like a TI-83 or something similar?
anonymous
  • anonymous
sorry... don't want to discurage you but there seems to be some people here who just want answers and aren't really interested in learning. it just seems to me if you're doing regression you should have an idea of what's what, like xbar and s_x etc.
anonymous
  • anonymous
forgot an o.. sorry
anonymous
  • anonymous
you still there?

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