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3由 Dixon,Wilfred J and Massey,Frank J Jr主題: “...Statistics, The Arithmetic Mean, Universe and Sample....”
出版 1957
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4由 Innes, Alexander E.主題: “...Statistics, Index Numbers, The Arithmetic mean....”
出版 1974
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5由 Gray,Clarence T and Votaw,David F.主題: “...Statistics, The Arithmetic Mean,Other Types of Correlation....”
出版 1939
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6由 Quenouille M.H主題: “...Statistics,Estimation of the Arithmetic Mean,Estimation of the Standard Deviation....”
出版 1959
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