# Non-linear regression Help

• Jul 5th 2011, 12:49 PM
cburke
Non-linear regression Help
Hello,

I have a data set to which I want to apply a non-linear regression. I have found the best-fit equation which is:

y=a + b * e^(-x/c)

Does anyone know what the parameters stand for (in layman's terms (Wink)) ? How they effect the shape of the function?

I know that:
a=y intercept

Someone suggested that b=amplitude and c=phase but how does this apply to an exponential function?

Help!
• Jul 5th 2011, 01:45 PM
pickslides
Re: Non-linear regression Help
Quote:

Originally Posted by cburke

I know that:
a=y intercept

Really, how so?
• Jul 5th 2011, 02:29 PM
TKHunny
Re: Non-linear regression Help
This is a very odd question. Call them "Steve", if you like. What meanins do they need?

Generally, spltting things up and dividing and readjusting leads to interesting insights, but there is not necessarily anything mandatory to call things. You should pick somehting meaningful to you and to your application.