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Gaussian fitting

  1. Oct 30, 2009 #1
    I have a set of data for an absorption spectra that I plot the firtst derivative of and it gives me a gaussianish plot, I then want to fit it with a gaussian and what i've been doing so far is calculating the mean and variace of the spread and then using them in the equation. Although this does give me a gaussian the amplitude is too large and I'm unsure weather this is the correct way to be doing the data analysis

    Can anyone help, thanks
  2. jcsd
  3. Oct 30, 2009 #2
    What you describe sounds right.

    The maximum likelihood estimators for the mean and the variance of a normal distribution are simply the population mean and variance. Maybe you made a mistake in your calculations.

    If not so, it would be helpful if you provide a some more details on what you are doing, maybe a picture:smile:
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