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When evaluating a chi-square test, describe the importance of the goodness of fit test. Provide an...

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Basic Math

When evaluating a chi-square test, describe the importance ofthe goodness of fit test. Provide an example and explain how thetest is used to evaluate the data.

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ChiSquare Goodness offitThis lesson explains how to conduct a chisquare goodness of fittest The test is applied when you have one categorical variablefrom a single population It is used to determine whether sampledata are consistent with a hypothesized distributionFor example suppose a company printed baseball cards Itclaimed that 30 of its cards were rookies 60 were veterans butnot AllStars and 10 were veteran AllStars We could gather arandom sample of baseball cards and use a chisquare goodness offit test to see whether our sample distribution differedsignificantly from the distribution claimed by the company Thesample problem at the end of the lesson considers this exampleWhen to Use the ChiSquare Goodness of FitTestThe chisquare goodness of fit test is appropriate when thefollowing conditions are metThe sampling method is simple random samplingThe variable under study is categoricalThe expected value of the number of sample observations in eachlevel of the variable is at least 5This approach consists of four steps 1 state the hypotheses2 formulate an analysis plan 3 analyze sample data and 4interpret resultsState the    See Answer
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