:
1. ( ), :
- 1050; - 600; - 400; - 40;
2. - 600 ;
3. , %:
- 25; - 50; - 25;
4. , 1 :
- 35; - 25; - 45; - 20;
5. 1,2.
: 2,2 /, -1,9 /, 0,3 /, 2,0/.
| 2,2 | 32,8 | 320,12 | ||||
| 2,28 | 22,72 | 330,11 | ||||
| 0,3 | 44,7 | 156,81 | ||||
| 2,0 | 107,95 |
600*0,25
= +
= ..
= /
2
.
200. 30 /. . , 7 , 10 100 . , : N = 40% 25 = 20% K2= 40%.
: N - 60% 25- 25% 2-70%. (..) : - 34%; 19,5%; - 40%.
1 : N 2,9 . .., 25 1,1 . .., K2 2,0 . ..
100 / 30.
S=200
30/
. . .. .
- 40% - 60%
-20 -25%
-40 70%
34% 2,9
19,5% 1,1
40% 2
2,9*30=87/
1,1*30=33/
2,0*30=60/
30 . 100.
7*30=210
7*30=210
10*30=300
= 40 20 40
= 60 25 70
= 34 19,5 40
= (100*87-210*40)/60*34=0,14/
= (100*33-210*20)/25*19,5=-1,85/ ( )
= (100*60-300*40)/70*40=-2,14/ ( )
200*0,14= 28
3
1. , :
| г | , | , 1 |
| 9,2 | ||
| 16,5 | ||
| 17,2 | ||
| 18,1 | ||
| 9,7 |
2. , 1 - 60 ( - 47), 2 - 65 ( 68), 3 - 130 ( - 52).
|
|
|
= +. = Σ ../ Σ
=(130*9,2+172*16,5+108*17,2+165*18,1+145*9,7)/(130+172+108+165+145)
=(1196+2838+1857,6+2986,5+1406,5)/720=14,28
=(14,28+18,1)/2=16,19
= (60*47+65*68+130*52)/255
= (2820+4420+6760)/255=54,9
1= (14,28*47)/54,9=12,23
2= (14,28*68)/54,9=17,69
3=(14,28*52)/4,9=13,53
