Fitting a function in R

Question

I have a few datapoints (x and y) that seem to have a logarithmic relationship.

> mydata
    x   y
1   0 123
2   2 116
3   4 113
4  15 100
5  48  87
6  75  84         


        

Answer 1

Check this document out: http://cran.r-project.org/doc/contrib/Ricci-distributions-en.pdf

In brief, first you need to decide on the model to fit onto your data (e.g., exponential) and then estimate its parameters.

Here are some widely used distributions: http://www.itl.nist.gov/div898/handbook/eda/section3/eda366.htm