n
n −
, 2 2
S n
n
σ = ×
−
;
n 1
n
n
→
−
, , 30
, .
,
,
n
n −
,
S n
n
σ = ×
−
.
.
,
, .
, .
.
, :
, d ω ≈ω μ,
ω μ - .
,
%
%x x ≈ x μ, x% μ - .
,
. ,
.
.
.
.
-
. ,
,
.
.
,
.
.
-
|
|
|
,
.
,
,
.
:
( ) 10%-
. 8.1.
8.1.
N 1000 ,
10% N, n=0,11000=100 .
,
.
:
100 2 3 500 4 380 5 10 3,82
x × + × + × + ×
= =;
3,93
~ 2 9 3 50 4 30 5 21
1 =
× + × + × + ×
x =;
3,76
~ 2 13 3 49 4 32 5 15
2 =
× + × + × + ×
x =.
, , :
, .
(
)
100 9 13
(
)
500 50 49
) 380 30 32
) 120 21 15
1000 100 100
