Page 67 - الإحصاء في مجال الدراسات الإعلامية

?[ ? ] 2????? ?????? ?? ?????? ???????? ?:??

??? ???? ???? ?????? ?? ??????? ??????? ???????

???? ???? ?????? ?? ?????? ???????? ???? ??????? ????? ?:??

?( ??? ? )? ??????????? ??????? ??-1???? ???? ??????? ??????? ?????? ?.??
??2?? ??2??
??????? ????? ??-2????? ????? ?????? ?? ???? ???????

??-3?????? ????? ?????? ?? ???? ?????? ?? ???? ??????? ??????? ?????? ?.??

?????? ??? ?????? ????? ??? ???? ?????? ?.???(????? ?????? ???? ??? ??????? ????? ?????? ??? ? ? ?? ? ???)?

?????? ??????? ?-:??

?× ??? ?????? ?????? ?????? – ??????? ??????? ?????? ?????? ?????? ??????? ?• ?????? =?
???????? ?????? ( ????? ??? ?????? )? ????? ?????? ???? ?????? ?+??

?× ??? ?????? ????? ?????? ????? ? ? ????? ??? ?????????

??????? ?????? ???? ?????? ?______________________________ +??

?( ????? ????? ???????? )?

????? ?1??

????? ?????? ???????? ??????? ??????? ?????? ?:??

?? -175 -165 -155 -145 -135 -125 -115??????? ???
??50 2 3 7 18 10 7 3?? ???

????? ? :?????? ? :????? ???? ???? ??????? ???????? ??????? ?????? ?:??

?? ??? ???

??3 3 -115??

??10 7 -125??

??20 10 -135??

??38 18 -145??

??45 7 -155??

??48 3 -165??

??50 2 -175??

???????? ?50??

?= ?25?? ??50?? ?=? ???? ?? ?? -1?????? ?????? ( ???? ?????? ) =?
??2?? ??2??

?? -2?????? ?????? ???? ??? ??????? ????? ?????? ??? ???? ??????? ??????? ???????

?? -3?????? ??? ?????? ??? ?145??

?????? ?????? – ? ? ?????? ?????? ??????? ?? -4?????? ??????? ?-:??
???????? ???????
?× ??? ?????? ??????? = ???? ?????? ????? ???????? ?+??

?× ?) 10?? ??20 - 25?? ?= ?( + 145??
??18??

?× ?10?? ??5?? ?= ?+ 145??
??18??

?= ?] 147.78 [ = 2.78 + 145??

??63??