Теория вероятностей и математическая статистика. Фарафонов В.Г - 43 стр.

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определение.    
ξ

-
[] ().
ξ
ξ
¥
¥
==×
ò
M m xfxdx


()ηϕξ=


-
[()] ()().ϕξ ϕ
¥
¥
=×
ò
M x f x dx


ξ
D

22
-
[] ( ) ()
ξξ
ξ
¥
¥
==-×
ò
D M x m fxdx
  

222 2
-
[] [] () .
ξξ
ξξ
¥
¥
=-=×-
ò
D M M x f x dx m




α
k
  
β
k
 

-
-
[ ] ( ) ( 1, 2, );
[ ] ( ) ( ) ( 1, 2, ).
ξ
αξ
βξ
¥
¥
¥
¥
= =× =¼
= =-× =¼
ò
ò
kk
k
kk
k
M x f x dx k
M x m f x dx k

7.4. Функция случайных величин


ξ

      

 ξ      
