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Communaiities, The cornlnunalities h j represent the fraction of the tota...

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Small sample test for mean, If the sample size is less than 30, then we nee...

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Arithmetic average or mean, Arithmetic Average or Mean The arithmetic m...

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Conduct a hypothesis testing, Celia is a nurse in a geriatric ward.  She no...

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Concepts of statistics, what are the importance, uses,optimums and applicat...

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TIME SERIES,

Probability, Replacement times for CD players are normally distributed with...

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Calculate the standard deviation, Zinc is a trace element and it is importa...

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Che, Chebychev inequality

Chebychev inequality