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Thread: Is there any other way to get LD50 for these cases when Probit does not yield results

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    Is there any other way to get LD50 for these cases when Probit does not yield results




    To determine a lethal dose 50 (LD50) (ie the dose or concentration of a compound that kills 50% of the insects) I have done a Probit regression. In some cases, the p square CHI is > 0.05 or the statistical programs for do Probit regression does not yield any result. This behavior does not change when I increase n, or I increase the number of doses, or when I normalize the data with LOG. The question is: Is there any other way to get LD50 for these cases when Probit does not yield results?

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    Re: Is there any other way to get LD50 for these cases when Probit does not yield res


    What does the p-value have to do with getting LD50?
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