( ), σ 2
x2
(x)2:
σ2 =x2 −(x)2,
N
x
x i Σ =
;
Σ
Σ ⋅
=
i
I i
n
X n
x
.
.
, .
:
0;
,
;
() ,
() A2 .
:
,
.
.
:
σ =
Σ
Σ
=
=
− ⋅
m
i
i
m
i
I i
n
X x n
()2
.
, ,
.
: c σ,
c x,
.
,
:
σ ≈ 1, 25 ⋅ d.
.
.
δ V.
, :
= ⋅100%
x
V
σ
σ.
_______
.
,
|
|
|
33%.
.
:
5.4.
,
I x
I x i b
ni i i n ⋅ x
x x i − i i x − x ⋅ n 2
i x i i x2 ⋅ n
1 0 4 2 6 12 10 60 4 24
2 4 8 6 8 48 6 48 36 288
3 8 12 10 11 110 2 22 100 1100
4 12 16 14 13 182 2 26 196 2548
5 16 20 18 6 108 6 36 324 1944
6 20 24 22 4 88 10 40 484 1936
7 24 28 26 2 52 14 28 676 1352
0 28 14 50 600 - 260 - 9192
:
= 600 =
⋅
= Σ
Σ
i
I i
n
X n
X .
,
, 12 .
:
R=28-0=28 .
,
.
5,2
= 260 =
− ⋅
= Σ
Σ
i
I i
n
X x n
D .
12 183,84 144 39,84
() 9192 2
2 2
2 2 2 = − = − = ⎟
⎟
⎠
⎞
⎜ ⎜
⎝
⎛ ⋅
−
⋅
= − = Σ
Σ
Σ
Σ
i
I i
i
i
n
X n
n
X n
σ x x 2.
,
σ = 39,84 = 6,3
.
_______
: σ ≈ 1,25 ⋅ d ≈ 6,5.
, .
100% 53%
= 6,3 ⋅ ≈ δ V,
.
,
