The expected frequencies are such that the proportions of one variable are the same for all values of the other variable. Alternative hypothesis ( H a): Whether a household recycles and the type of intervention they receive are related in the population The proportion of households that recycle is not the same for all interventions.Ī chi-square test of independence works by comparing the observed and the expected frequencies.Null hypothesis ( H 0): Whether a household recycles and the type of intervention they receive are not related in the population The proportion of households that recycle is the same for all interventions. ![]() Example: Null & alternative hypothesesThe population is all households in the city. Replace variable 1 and variable 2 with the names of your variables. You can use the above sentences as templates.
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