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MATLAB problem:How can I compute the standard error based on the confidence interval?

  1. Feb 2, 2007 #1
    Hello,
    I fit my data to gamma distribution using the gamfit function of MATLAB.
    The gamfit function returns MLEs and 95% percent confidence intervals as follows:
    • a = 2; b = 4;data = gamrnd(a,b,100,1);
    • [p,ci] = gamfit(data)
    • p =
    • 2.1990 3.7426
    • ci =
    • 1.6840 2.8298
    • 2.7141 4.6554
    I am interested in finding the standard error of the coefficients rather than the confidence interval.
    I want to know how to compute the standard errors based on the confidence interval??

    Moreover, likelihood ratio hypothesis test were used to test hypotheses such as p(1)=0.5, but I don’t know how to obtaine and input the NullLLF and BaseLLF values

    Syntax likelihood ratio hypothesis test
    [H,pValue,Ratio,CriticalValue]=lratiotest(BaseLLF,NullLLF,DoF,Alpha)
     
  2. jcsd
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