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icedancerfigureskater
HELP! 2 math questions that i've been stuck on for ages!! need answers quick!!
@jim_thompson5910 @satellite73 @henryarias5
@LilyKitty
@Directrix @cwrw238
It is a little difficult to see the problem. I suggest you close this and just type it out.
You can click on it and zoom it in though.. @Preetha
I see 3 problems. Which two of these do you want to work on? @icedancerfigureskater
The two with charts attached, so 4 and 5. @Directrix
do you know the formula for r?
no @pgpilot326
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
can you write it out? @pgpilot326
\[r=\frac{ \sum{ xy }-n\bar{x}\bar{y}}{(n-1)s _{x}s _{y}}\]
wow okay so how can i use that to solve my first problem?
do you know what r is?
do you have a calculator... like a TI-83 or something similar?
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.