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  ACADEMIC PROJECT, QUESTIONNAIRE RELIABILITY CHECKING, SPSS DATA ANALYSIS, PLAGIARISM CHECKING, BOOK BINDING, BOOKS SALES, E-BOOKS DOWNLOADING, BOOK LAYING AND INDEXING,  ISBN BARCODE IMAGE GENERATION, AND BOOK PUBLISHING   OpenBook Sample Size Calculators  In order to generalize from a random sample and avoid sampling errors or biases, a random sample needs to be of adequate […]