tml09
08-03-2007 18:13:02
Ok. I have a graph that shows 100,000 people and every five years, some of them die. It goes by increments of 5 from 0-100. It slowly decreases, and then rapidly decreases. THe equation is as follows
y= -847.96x+11741.2
I need to find the real world meanings for the numbers.I have found the x as the avg. number of people dieing a year (is that correct?), but I do not know what the y-intercept would stand for. Any help?
moviemadnessman
08-03-2007 18:17:15
Well, the y-intercept should be the number of people that you start with (so 100,000). If you know how many people die per year on average, then x would be the number of years, and you would multiply that by the average.
Say the average was 42. Your equation would be y=-42x + 100,000. Then, you could plug in any number of years into X, and find how many people are still alive.
funny that u mention 42
42 is the Answer to Life, the Universe, and Everything
moviemadnessman
08-03-2007 18:32:19
[quote761a69b123="jy3"]funny that u mention 42
42 is the Answer to Life, the Universe, and Everything[/quote761a69b123]
Maybe it was intentional ;) ... actually, it was just because that's the page I was on in one of my textbooks shrug
OldManWrigley
08-03-2007 18:52:53
[quote9ec2a02ac0="jy3"]funny that u mention 42
42 is the Answer to Life, the Universe, and Everything[/quote9ec2a02ac0]
It's also the answer to level 42.......
What are you studying? Are you currently learning about risiduals, regression, LSRL, etc..?
UberVash
08-03-2007 20:51:14
Actually, it looks like a linear regression. Is that what you're studying now?