I'm not sure how much by hand you want to do
but you basically are doing a log- log plot
y= a x^b
lny = ln(a) + bln(x)
so graph your points on a ln(y) versus ln(x)
the slope is b and the intercept is ln(a)
I have a Math Internal Assessment that I'm doing (basically a Math Essay...) and for one of the parts I have to find an equation for the data given. I have tried all the regressions on my calculator and found that Power Regression gives the best equation that fits the graphed data. I have a program on my computer that can do power regression, though I need to know how to do the power regression by hand (I have to "show" how I got that graph).
any input would be appreciated and sorry if this is the wrong forum because I don't really have any idea where it should go.
I know that the formula is ax^b, but I do not know what a nor b stands for...
I'm not sure how much by hand you want to do
but you basically are doing a log- log plot
y= a x^b
lny = ln(a) + bln(x)
so graph your points on a ln(y) versus ln(x)
the slope is b and the intercept is ln(a)
thanks for all your help. And yes, I know that I do need to use technology at some point to for it, though I need to make sure that they know that I am using some math instead of just using technology for everything.
And thanks for the mathcad .pdf, I have mathcad and I guess I'll install that now and use it (it's way better than excel, except more confusing...)
If interseted I've created 2 web sites using Mathcad
Calculus Animations which is a collection of animations and lecture notes
and what may be of more immediate use for learning the basics of mathcad
Creating Animations Using Mathcad