How to fit model with repeatedly measured independent variable, but dependent variable measured once

[Lijuu]

Dear Everyone!

How to fit model with repeatedly measured independent variable, but dependent variable measured once?

I know repeated measures ANOVA and mixed effect models, but all those models deal with repeated measures of dependent variable. How to fit a single measured dependent variable to repeated measured independent variables?

Thanks alot!

[PaigeMiller]

Typically, you would average the repeated measurements of the independent variable, then fit the model using the average of the independent variable. 

[Lijuu]

indeed, i was thinking like what you said but it doesn't make sense for the owner of the data.