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Fundamentals of business statistics
Sweeney, Dennis J., (2011)
Statistics for managers using Microsoft Excel
Levine, David M., (2011)
Quantitative methods for business and management
Buglear, John, (2011)
Statistics for management and economics
Keller, Gerald, (2005)
A flexible functional form for S-curve
Raj, Baldev, (1981)
Managerial statistics
Keller, Gerald, (2009)