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Hi, I am using logistic regression (Probit model) in XLSTAT Base to determine lethal dose values (LD50 & LD99). My response variable is in the aggregated data form (sum binary). Should I enter the control mortality valued under "corrective weights" in options?I would be grateful for your help.
This option should be used when the number of observations for the different classes for the dependent variables is not uniform. The selected variable should contain weights assigned to each observation.
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