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This unique review book uses simple, step by step, easy to understand arthmetic to illustrate and explain the following statistical concepts: average, standard devioation, frequency, assumed average, grouped data, frequency distribution, permutations and combinations, binomial distributioin, normal distributiion, poisson distributioin, sampling theory, difference between two means, analysis of variance, coefficient of correlation chi square test, linear regression, and index numbers. For students, teachers, professors, researchers, data analysists and the interested lay person, this is a vital supplement to the statistical text and reference books that they may currently be using or plan to use.