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22 August 2009 @ 01:35 pm
Regression analysis - PLEASE HELP!!!  

This is for school.  I have been working on it all week and cannot figure out the last part.  I'm working VERY hard to get an A on this assignement because it means the difference between an A and a B in the class, which could make or break my 4.0 GPA I have worked my ass on so hard in school.  It is for my Statistical Analysis class. 

I have a question regarding regression analysis.  I have the information needed, but I need to figure out how to determine which regression produces the strongest correlation coefficient result and why this is. When it comes to analysis, I am good at getting the information, but this part of it is very difficult for me. I have found that all the R-squared values and y-intercepts on my charts are the same, but the slopes are different, so I don't know if that is helpful or not. I am supposed to give specific reasons regarding any similarities or differences in the output results, but I don't know any specific reasons. I have been working on this all week and just cannot figure this part out. Can someone help? 

Chart info:

Chart One: R² = 0.1634, y intercept = .0462x + 4.419, slope = 0.273647058823529

Chart Two: R² = 0.1634, y intercept = 0.0462x + 4.419, slope = 0.0774117647058824

Chart Three: R² = 0.1634, y intercept = 0.0462x + 4.419, slope = 0.164235294117647

The R-squared value and y-intercepts were found in the charting options in Excel and the slope was found using the SLOPE function, if that makes a difference.

ANY help would be appreciated, thank you so much in advance!

Also a HUGE THANK YOU to everyone who commenting on my cancer scare posts!  I haven't had time to get back to everyone because this has been a CRAZY week workwise, but I appreciate it more than you know.  Having people backing me up in such a scary time made me feel so much better.  THANK YOU ALL!!!
I feel: exanimateexanimate
I'm listening to: American Psycho Soundtrack
winchesterwomanwinchesterwoman on August 23rd, 2009 03:04 am (UTC)
I am so sorry but I am not such a nerd to get all those maths! I don´t get along with them heheehh
Lady Mansonladymanson on August 23rd, 2009 03:07 am (UTC)
Re: mmm
Neither do I! :) I've been trying to figure this out all day. It's making me crazy.
winchesterwomanwinchesterwoman on August 23rd, 2009 03:10 am (UTC)
well I fell good that I am not the only one. but what are you taking dude? that so difficult in my whole life I never saw them. you want to be a engineer or what? you are going to be in NASA??? hahah just to read that numbers gave a headache! :P

Hoping you are o.k :D
Lady Mansonladymanson on August 23rd, 2009 03:37 am (UTC)
Re: hahahaha
I'm studying for a business degree with a focus in finance. We have to take a statistics class and a good portion of it I understand, but this stuff is just over my head.
winchesterwomanwinchesterwoman on August 23rd, 2009 10:25 pm (UTC)
Then you are such a nerd!!! finace??! you have to be such a intelligent person to study that!
Lady Mansonladymanson on August 24th, 2009 03:09 pm (UTC)
Re: Right!
Oh, I know! :) It's those nerdy jobs that pay VERY well though. I find it easier now because I've worked in accounting and finance for five years, so the aspects of the job that are in the schoolwork are much easier now than they would have been had I done this right out of high school.
winchesterwomanwinchesterwoman on August 26th, 2009 06:23 pm (UTC)
I am totally lost with those things. you are really such a nerd. and if you told me that you have something in your brain now I don´t believe you!:P:P:P:P My Goood! why not you borrow me some of your neurons and I will see if I can be a better intelligent?

Yeah all those jobs with maths are well paid. so maybe tomorrow you will be a rich.