Fraser, Cynthia2018-12-062024-06-292018-12-062024-06-292009978-0-387-74403-2https://drs.ess.gov.et/handle/123456789/28262enStatistical CompetencesDescribe DataHypothesis TestsConfidence IntervalsBusiness Statistics for Competitive Advantage with Excel 2007:Basics, Model Building, and CasesBook