1. J

    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...