Page 61 - الإحصاء في مجال الدراسات الإعلامية

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

???? ????? ???? ???? ????? ?? 1??????? ??????? ?? ? 1?????? ????? ????? ?? 2??????? ????????
??? ? 2?????? ????? ????? ?? 3??????? ??????? ?? ? ........ ? 3????? ????? ????? ? ??

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

???1???+1???2???+2???3???+ ------------- 3?? ? ? ??

?= ?---------------------------------------??

???+1???+2??? ---------------- +3?? ??

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

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

??45 25 35?? ???? ???????

?????? ???? ?????? ?60 85 75??

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

?( ?) 60 × 45 ( + ) 85 × 25 ( + ) 75 × 35?? ?????? ????????? =? ??????:??
??45 + 25 + 35??

?= [?]70.95??

?= [?]73.33?? ??60 + 85 + 75?? ????? ???????? ??????? ????? =?
??3??

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

?? .:?????? ????????? =?

?????? ???????? ?????? × ??? ??????? ? +?????? ???????? ??????? × ??? ??????? ? +?????? ???????? ??????? × ??? ????????

???? ????? ???????? ?????? ? +???? ????? ???????? ??????? ? +???? ????? ???????? ????????

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

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

?? -????????? ?????? ?4 ? 3 ? 2??

???????? = ?] 3 [ = 9 = 4 + 3 + 2??

??33??

?? -????????? ??????? ?6 ? 5 ? 4??
??15 6+5+4??
????????= ???????????????????? =__________ =?5??
??33??

?= [?]4?? ??24?? ?=? ??15 + 9?? ?=? ???????? ????? = ( ?) 6 + 5 + 4 ( + ) 4 + 3 + 2??
??6?? ??6??
??3+3??

??57??