Use of Ranks in One-Criterion Variance Analysis Author(s): William H. Kruskal and W. Allen Wallis Source: Journal of the American Statistical Association‚ Vol. 47‚ No. 260 (Dec.‚ 1952)‚ pp. 583-621 Published by: Taylor & Francis‚ Ltd. on behalf of the American Statistical Association Stable URL: http://www.jstor.org/stable/2280779 Accessed: 05-03-2015 13:33 UTC Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use‚ available at http://www.jstor.org/page/info/about/policies/terms
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Chapter 10 Statistical Inference About Means and Proportions with Two Populations Case Problem: Par‚ Inc. This case can provide discussion and differing opinions as to what hypothesis test should be conducted. Students should begin to see that logical arguments exist for structuring the hypotheses differently. In some interpretations of the problem‚ a two - tailed test can be
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modifications for many recent graduates is the decrease in the amount of partying‚ and the realization that it ends when college does. I conducted a statistical analysis on the consumption of alcohol for those still enrolled in undergraduate programs compared to the consumption of recent graduates. My research objectives include the following: * Document with statistical evidence that UMass Amherst students currently enrolled in courses consume more alcohol than UMass Amherst recent graduates. * Use
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and a lack of control due the old employees‚ for the analysis I will use the Statistical Process Control (SPC). ¨Statistical process control (SPC) involves using statistical techniques to measure and analyze the variation in processes. Most often used for manufacturing processes‚ the intent of SPC is to monitor product quality and maintain processes to fixed targets. Statistical quality control refers to using statistical techniques for measuring and improving the quality of processes and includes
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how consumers decide which brand of perfume to buy‚ what research method would you use Explain. Survey research can be used to study how consumers decide which brand of perfume to buy. It is preferred because it is possible to obtain information about the opinion‚ behavior and decisions of the consumers using surveys. Moreover‚ surveys are preferred over any other research method because; surveys are a form of primary data source. Existing secondary data sources cannot be used for this study in
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Homework Exercise 29 Grand Canyon University December 23‚ 2012 1. Were the groups in this study independent or dependent? Provide a rationale for your answer. Answer- The group studies were independent. They were being tested by gender‚ male and female. They were also not matched or paired with each other. 2. t = −3.15 describes the difference between women and men for what variable in this study? Is this value significant? Provide a rationale for your answer. Answer- The variable
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Practical uses of statistical power in business research studies An important use of power is in the planning of sample sizes prior to gathering data used to evaluate statistical hypotheses. A number of business statistics texts illustrate this use of power (Anderson‚ Sweeney‚ & Williams‚ 1999; Daniel & Terrell‚ 1995). Again‚ however‚ the presentation is somewhat technical and developed through formulas‚ and is restricted to simple one-sample tests involving a mean or binomial proportion as the
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CHAPTER 4 – THE BASIS OF STATISTICAL TESTING * samples and populations * population – everyone in a specified target group rather than a specific region * sample – a selection of individuals from the population * sampling * simple random sampling – identify all the people in the target population and then randomly select the number that you need for your research * extremely difficult‚ time-consuming‚ expensive * cluster sampling – identify
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| Statistical Analysis of Yearly Checkups based on Gender | | STAT 3125 Section 04 | | 11/29/2012 | | This statistical analysis is of a randomly selected sample of 300 from the 2010 version of the Behavioral Risk Factor Surveillance System (BRFSS) database1. The selected study on the length of time since last routine checkup was listed under the SAS Variable Name – CHECKUP1.This data set specified how long it had been since the respondent had been in for a routine checkup‚ defining
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