[R] Help in Customising NLS function to spit out Mean and SD of the new fit!!!

[Jagarlamudi, Choudary]

Hi all,
 I'm trying to customize the nls function code to spit out the sd and mean of the new fit. All it gives me are the fitted values. THis function seems to work fine for my project otherwise. All i need is the SD and MEAN. Can someone help me to customise. I frankly did not understand the nls code at all.
 
I have 10 x and 10 y values from a histogram. I need to use nls to do the best fit and give me the mean and sd of this new fit.
 
Thanks in advance
 
Choudary Jagarlamudi
Instructor
Southwestern Oklahoma State University
STF 254
100 campus Drive
Weatherford OK 73096
Tel 580-774-7136