chi squared hypothesis how to measure the change in the participation level how to measure population participation what is the purpose of chi square how can a policy change affect the population how to do chi square what is the hypothesis for chi square what makes chi square the best approach which assumption should be applied to a chi square model to measure the effect of a policy change? what is meant by chi square what is the chi square approach to measure participation what is the chi square for participatory participation how to measure population change why use a chi square in the population estimating of the change in the policy environment how to measure population change why use chi square for population why use chi square how do you measure participation after policy change when a policy has been revised, what happens to all participants? how are the chi square and contingency trig used