I forgot how to do this
I have this data:
7 days in business --------- 5 servers
14 days -------- 13
21 days --------- 21
28 days --------- 42
35 days --------- 50
42 days --------- 59
49 days --------- 80
56 days --------- 120
I need to make a function where the variable is the number of days in business and the output is the projected number of servers. I can't find my graphing calculator
y=ax+b
i'm too lazy to analyze your data though
Don't feel like making a function, but here's a plot:
[spoiler](http://imgur.com/4H9m1.png)[/spoiler]
The last data point of 56 days and 120 servers looks like an outlier. With that, it looks roughly like exponential growth. Without, it looks roughly linear.
Quote from: Strongbab on June 07, 2010, 09:55:52 PM
y=ax+b
i'm too lazy to analyze your data though
yeah but I need like a quadratic function that accounts for growth, or something, not a linear average
(http://imgur.com/t64iu.jpg)
with trendline, r squared value, and equation, although it doesn't really makes sense to me
EDIT: oh nvm that's not what you want lol
idk how to do anythign else
I started messing with trendlines and then realized that's not what you wanted
i'm not a math man, but it looks like exponential functions are what you're looking for, particularly exponential growth.
Quote from: Strongbab on June 07, 2010, 10:09:53 PM
with trendline, r squared value, and equation, although it doesn't really makes sense to me
EDIT: oh nvm that's not what you want lol
idk how to do anythign else
y=2.1463x - 18.857 from that image is pretty much the function he needs.
Using any x value for number of days, it'd give a rough estimate for number of servers if the known trend continues.
Exponential growth doesn't seem like it'd be as suitable, because the type of server gain in this context isn't the sort of thing I'd expect to raise that fast.
Quote from: bluaki on June 08, 2010, 03:31:13 AM
y=2.1463x - 18.857 from that image is pretty much the function he needs.
Using any x value for number of days, it'd give a rough estimate for number of servers if the known trend continues.
Exponential growth doesn't seem like it'd be as suitable, because the type of server gain in this context isn't the sort of thing I'd expect to raise that fast.
or would you
Get a TI graphing calcualtor, and press a lot of buttons, and you will get an equation. [Stat] [edit] (put in your data) [Stat] [quadReg] [L1] [,] [L2] [,] [stat] [Y-var] [y1] [enter]
And people say that algebra 2 teaches you nothing (which I have a final for tomorrow wish me luck!)
Quote from: BlackDS on June 08, 2010, 12:18:21 PM
Get a TI graphing calcualtor, and press a lot of buttons, and you will get an equation. [Stat] [edit] (put in your data) [Stat] [quadReg] [L1] [,] [L2] [,] [stat] [Y-var] [y1] [enter]
And people say that algebra 2 teaches you nothing (which I have a final for tomorrow wish me luck!)
yes I remember how to do it on A CALC but I think I sold mine for coke money awhile ago.
Quote from: wziard on June 08, 2010, 07:31:58 PM
yes I remember how to do it on A CALC but I think I sold mine for coke money awhile ago.
ಠ_à²