Possible biased weighting towards constraint categories with counts <5.

[MGrunnill]

In draw.compare_to_constraints constraint categories with counts of 0 are ignored, as this would lead to \chi^2 = \inf . Is there an argument for ignoring all counts <5 as this leads to a generally inflated \chi^2 value. If in draw.draw_households you accept the draw of households that gives the lowest \chi^2, you could be biasing your fit towards constraint categories with counts <5.

I am not sure how big an issue this is. It may only be a problem where there are a number of constraint categories with counts <5.