358                                                    13

       :

[ф  (1 + NR)/C,\ - 1 = RR,                          (13.6)

it   .  PI   ;

^      .  CPI   ;

NR     ;

RR        .

   ,   CPI  121  124  
   (124/121) - 1 = 0,0248,  2,48%.   
   IR,         -
 ,    13:

[(1 + NR)/(\ + IR)] - 1= RR.                           (13.7)

,     RR = 1,08/1,0248 - 1 = 0,0539, 
5,39%.

     ,     -
,       :

NR - IR =RR,                              (13.8)

 =   .       
   0,08  0,0248 = 0,0552,  5,52%.  , 
     0,0552  0,0539 = 0,0013,  0,13%14.

13.3.3     

         ,   -
 ,           
    .   ,   , -
        .   
      ,    
  ,   EIR (  )  ENR
(   ) .    
ERR (     )   -
 :

ERR = ENR -EIR.                           (13.9)

        -
,          
     .   , -
  (13.9):

ENR = ERR + EIR.                           (13.10)

,      4%,    -
       6%,       
  ,        -
 10%.  ,       
    1% ( 4  5%)     -
    1% ( 10  11%).  ,   
 ,        ,  -
     .