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Apr 25, 2015 at 19:41 comment added Brian Borchers No, I wouldn't just use $\sqrt{C_{j,j}}$.
Apr 25, 2015 at 19:05 comment added Clemens Let's assume one wants to fit a Gaussian to a grayscale image - i.e. having lots of data points and only very few parameters - would you say that this is still a "sensible" approach, or is one better off by just taking $\sqrt{|C_{jj}|}$ (notation from above) for an error estimate?
Apr 19, 2015 at 6:35 vote accept Clemens
Apr 18, 2015 at 18:25 history answered Brian Borchers CC BY-SA 3.0