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Statistics Essay

Z-Scores
Running Head: Z-Scores Statistics: Z-Scores goes here of your Introduction In statistics we often have to compare two scores calculated using different units or scales and it is difficult to establish a comparison between these raw scores. Raw scores are the original numbers we get in a statistical experiment. In such cases Standardization or Z-scores is used to establish a comparison between these raw scores. Z-Scores provide a direct measurement of size of score relative to other scores of
Pages: 2 (500 words), Essay
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Hypothesis Testing
Test Statistics In selecting a test statistic for a hypothesis test, a given sample has to satisfy some conditions. The first is based on the natureof the sample concerning whether it follows a normal distribution or not. In using the z or t- statistic, an assumption must be made that the data follows a standard normal distribution. The other consideration is the sample size, which determines the selection of a test statistic. In regard to samples that are greater than thirty, the test
Pages: 2 (500 words), Essay
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Chi-square Distribution
The answers to possible questions from the variables could ‘yes, there is a relationship between sales and use of software’ or ‘no’.Considering the distribution of the sales force of WidgeCorp, it is convenient to assume that in each region, there are 500 sales persons which give the total of 500.
Pages: 5 (750 words), Essay
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