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 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!!!