1
1. . .
2. ( , , ) . .
2
, . .: 12, 10, 7, 4, 13, 16, 6, 14, 16, 12, 10, 7, 13, 14.
1) i .
1 .,
m1 - , i
Pi -
:
1
xi | ||||||||
mi | ||||||||
Pi | 1/14 | 1/14 | 2/14 | 2/14 | 2/14 | 2/14 | 2/14 | 2/14 |
- , - , - .
4 :
: i= (Xmax-Xmin)/n, x =16, x = 4, n , (16-4) / 4 = 3 , 4 .
2
, .. | (f) | (x) | Xf | (X-X1)2f |
4 7 | 5,5 | 88,72 | ||
7 10 | 8,5 | 5,84 | ||
10 -13 | 11,5 | 6,65 | ||
13 -16 | 14,5 | 73,61 | ||
: | 174,82 |
:
X1= =
:
D=
:
= =
V= 3,53/10,21*100%=34,6%
( )
, .. | (f) | |
4-7 | ||
7-10 | ||
10-13 | ||
13-16 |
:
Me=
- =10
i - =3
= 14/2=7
- = 3
SMe-1 - , = 6,
Me= =10+3*
:
M0 = XM0 +i * (fM0 - fM0-1) / (fM0 - fM0-1)+ (fM0 - fM0+1)
- = 10
i - = 3;
fMo - =4;
fMo-1 - , = 2
fMo+1 - , = 4,
|
|
:
M0 = 10 +3 * (4-2) / (4 - 2)+ (4 4) =13 ..
2.
( 200 ) ( ).
.
.
2008
, .
() () .
6. 200 200+4 . .
2
, . .
200 | 200+1 | 200+2 | 200+3 | 200+4 | |
, | 25.70 | 28.01 | 29.25 | 30.39 | 32.19 |
2.41 | 2.35 | ||||
2.50 | 1.58 | ||||
1.45 | 1.95 | ||||
, | 13.11 | 16.64 | |||
, | 1.66 | 2.42 | |||
2.39 | 3.45 | ||||
2.28 | 3.80 |
:
:
. . | 25.7 | 28.01 | 29.25 | 30.39 | 32.19 |
2.31 | 1.24 | 1.14 | 1.8 | ||
2.31 | 3.55 | 4.69 | 6.49 | ||
= | 108.99 | 113.81 | 118.25 | 125.25 | |
=-100% | 8.99 | 4.43 | 3.9 | 5.92 | |
=-100% | 8.99 | 13.81 | 18.25 | 25.25 |
yi 2000
Yi-1
:
,
yn=
yi=
n= -
:
=
:
= - 100% = 105.79 100= 5.79%
:
Y= | ||
25.7 | ||
28.01 | 27.65 | |
29.25 | 29.22 | |
30.39 | 30.61 | |
32.19 |
:
% | % | |||
, | 25.7 | 32.19 | ||
2.41 | 9.38 | 2.35 | ||
2.5 | 9.73 | 1.58 | ||
1.45 | 5.64 | 1.95 | ||
, | 13.11 | 51.01 | 16.64 | |
, | 1.66 | 6.46 | 2.42 | |
2.29 | 8.91 | 3.45 | ||
|
|
: 2000-2004 . 1.62 . . , .
3.
.