Page 124 - الإحصاء في مجال الدراسات الإعلامية

?????? ?? ???? ??? 2????????? ??? ??? 2????????? ??? ???? ??? ??? ?.??
?? .:????? ? ?? ???? ???????? ?.??

????? ???????? ??????? ???????? ?:??
???? = 2?????? ???? × 2???

?? ? ? -?? ??? ???? =?
?( ? ? +?? ) ( ?? ? +?? ) ( ? ? +??? ) ( ? ? +???

?)?

?( ? ? ? -?? ?? )?2??
??? ??? = 2?? ( ? ? +?? ) ( ?? ? +?? ) ( ? ? +??? ) ( ? ? +?? )?

??70 × 200 - 50 × 100??
?????? ??? = ( ?) 250 ( ) 170 ( ) 120 ( ) 300??

??14000 - 5000??
?= ?1530000000??

?= ?0.2301?? ??9000 -??
?= ?39115.21??

?= ?0.2301??
???? = 2?????? ???? × 2???
?= ( ?] 22.24 [ = 420 × 2)0.2301??

?( ? ? ? -?? ?? )?2??
??? ???( = 2??? ? +?? ) ( ?? ? +?? ) ( ? ? +??? ) ( ? ? +?? )?

?( ?2) 70 × 200 - 50 × 100??
????) 250 ( ) 170 ( ) 120 ( ) 30×0 (420 = 2??

?( ?2) 14000 – 5000??
????1530000000× 420 = 2??
?( ?2) 9000??
????1530000000× 420 = 2??
??81000000??
????15300000×04020 = 2??
??81??

????] 22.42 [ = 1530 × 420 = 2??

??116??