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  1. S

    Chi square and Z test for proportions for nominal data

    I believe that to analyse 2 sets of nominal data chi square test is used ... can't we use Z test for proportions also to analyse 2 sets of nominal data ...
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    What is study population in Statistics?

    this is a question that i have to answer * you have been requested to design a study to determine the prevelence of hypertention in my area. 1. describe the study design that u would use 2. describre the study population you would plan to include in the study? when describing the study...