.


:




:

































 

 

 

 


)




7.16

.

100. , . , . , .
3      
3-4      
4-5      
5-6      
6      
  - -

:

) 100 .

)

)

:

) 100 . = / = (2.5*48*25 + 3.5*6*24 + 4.5*10*23+5.5*12*20+6.5*8*18) / (25*4+6*24+.+8*18) = (/100 )

) = / - = 110.000.000 / 40 = 2.750.000 ./.

) = / = 110.000.000 / (4*25000/1000 + 6*24000/923 + 10*23/821 + 12*20/690 + 8*18/600) = 110.000.000/1124 = 9786.4

 

7.18

, . , . . , . , ..
  22,0   19,8  
  21,8   18,0  
  22,2   21,6  
           

:

)

)

, . . , / .

:

) :

. = / - .

= (10560 + 19620 + 12210) / (10560/22 + 19620/21.8 + 12210/22.2) = 220

.

) :

= (19.8*50 + 18*95 + 21.6*54) / (50+ 95+54) = 3866.4 / 199 = 19.429

 

.

: (22*50 + 21.8*95 + 22.2*54) / (50+ 95+54) = 219 .

(19.429-220= -200.571) 200.571 :

1) :

Z¯1 Z = 19,429 219 = - 199.571 /

2)

Z - Z¯0 = 219 220 = - 1 /

 

 

7.21

, . , % , %
    -4.5  
    +3.6  
    +5.2  

:

) :

)

:

) :

= . /

-4,5% = 2440 / a0 * 100% - 100%

95.5% = 2440 / a0 * 100%

0.955 = 2440 / a0

a01 = 2440/0.955 = 2554.97

a02 = 2520/1.036 = 2432.43

a03 = 2610/1.052 = 2480.99

= (2440 + 2520 + 2610) / (2554.97 + 2432.43 + 2480.99) = 1.014

+ 1,04%

) = / . = (2440*0.25 + 2520*0.12 + 2610*0.15) / (2440 + 2520 + 2610) = 1303.9 / 7570 = 0.1722 - . .

 





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