Delta method for density estimate
Posted: Fri Apr 10, 2015 7:31 amHey, I'm doing my honours project on estimating population densities using different methods. One of the methods I'm using is "traditional" capture-recapture, using MARK. I have the abundance estimate using Huggins p&c and my effective trapping area using full MDMM.
My next step is to get confidence intervals and standard errors, and to do this I was going to use the delta method. However I cannot find the values that are needed for the estimation - the derived output, which I expected the values to be in only gives the Nhat, SE and CI but not the values it used to obtain these.
Am I looking in the wrong place or am can I not do this?
Failing the delta method I was going to use the 95% CI for the abundance estimate and use that to give CI for the density estimate, however this seems to crude to be correct.
Many Thanks
James
My next step is to get confidence intervals and standard errors, and to do this I was going to use the delta method. However I cannot find the values that are needed for the estimation - the derived output, which I expected the values to be in only gives the Nhat, SE and CI but not the values it used to obtain these.
Am I looking in the wrong place or am can I not do this?
Failing the delta method I was going to use the 95% CI for the abundance estimate and use that to give CI for the density estimate, however this seems to crude to be correct.
Many Thanks
James