Handling and describing data forum

Unit 1: issue of handling data and it helped me by refreshing the central limit theorem

 
Picture of Flavio Monteiro de Oliveira Jr
Re: Unit 1: issue of handling data and it helped me by refreshing the central limit theorem
by Flavio Monteiro de Oliveira Jr - Sunday, 16 November 2008, 7:55 PM
 
WHY 30? WHY EXACTLY THIS NUMBER? I DIDN´T UNDERSTAND IT.