Let X be a random variable with mean . Show that if E 4 (X

Introductory​ S ​ tatistics Chapter​ ​1: Lecture​ ​August​ ​23rd,​ ​2017 →​ ​1.1​ ​Terminology​ ​← What​ i ​ s​ ​Statistics - There​ ​is​ ​no​ ​unique​ ​or​ ​general​ ​definition​ ​of​ ​Statistics.​ ​Few​ ​of​ ​the​ ​most accepted/used​ ​definitions​ ​of​ ​statistics​ ​are​ ​given​ ​below: - A​ ​science​ ​of​ ​collecting,​ ​interpreting,​ ​and​ ​representing​ ​data. - Statistics​ ​is​ ​a​ ​way​ ​to​ ​collect​ ​information​ ​out​ ​of​ ​data. - Statistics​ ​is​ ​the​ ​study​ ​of​ ​how​ ​to​ ​collect,​ ​organize,​ ​analyze​ ​and interpret​ ​numerical​ a ​ nd/or​ ​categorical​ i ​ nformation. - A​ ​language,​ ​a​ ​mechanism​ ​for​ ​creating​ ​and​ ​communicating