how much data is required to properly fit a chr model how much data is needed for fitting a chart model? what is the fitting of a curve model what is required to correctly fit a hatch model? what model is fit to fit curve how many data is needed to properly fit a gard model? how much data are needed to properly fit a garch model? what data is needed to correctly fit a gard model how many data are needed weight of a curve how much data is needed to properly fit a curve model how many data to properly fit a ch how many data is needed to properly fit a hatch model? how many data does it take to properly fit a curve model? what is fit for a curve model? fit model how much data is required? what's the data fit for a gard(1,1) model what model should you fit a bach curve with how many data are used to fit a curve how many data are required to properly fit a curve model?