Suppose a researcher was interested in learning more about parents' concerns when their children start elementary school. the researcher asks the parents of 800 randomly selected first graders in rural school district and the parents of 950 randomly selected first graders in an urban school district to rate their level of concern with the following statement: we are (a) not at all concerned (b) somewhat concerned or (c) very concerned about the nutrition level of school lunches. if we wanted to test whether there was an association between the response to the question and the type of school district that the first grader was attending, would this be a test of homogeneity or of independence?

test of homogeneity            

Explanation:

        In the test of homogeneity, random samples are selected from each populations or subgroup separately and then collect data on a single absolute variable. In homogeneity test, different samples are collected comes from the same population.

        In the context, the researcher selects a different samples of parents from both rural first graders as well as urban first graders. Thus this is a test of homogeneity.

gold discovery in california, and pioneer settlers were sometimes pulled west because they wanted to make a better living. others received letters from friends or family members who had moved west. these letters often told about a good life on the frontier. the biggest factor that pulled pioneers west was the opportunity to buy land.

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