  511

 17.2 {}

() 

1. :

(^) - (S/xSX)    (16  590,80) - (54,84  66,62)

 =  = 0,63.

(TxSX2)-^)2         (16  848,38)-(66.62)2

2. :

{LY/} - [(2./] = [54,84/16] - [0,63  (66,62/16)] = 0,79%.

3.    :

{[^-(^)]^?-^)}'72 =
{[1039,03 -(0,7954,84)- (0,63 x590,SO}]/(l6-2')}"2 = 6,67%.

4.   :

    XX2 - [(SX)2/?] \ =

=6,67/{848,38-[(66,62)/16]}1/2=0,28.

5.   :

    - [(?X)2 ftX2 J i  =

=6,67/{16-[(66,2)2/848.38]}l/2=2,03.

6.  :

(Tx?W)-(?yx?X)
{[(Txi:2)-(?V)2]x[(Tx?X2)-(?X)2]}'/2

(16590,80)-(54,8466,62)               . _.

=  = 0,52 .

{[(16 1039,03)-(54,84)2]x[(16x848,38)-(66,62)2]}1/

7.  :

( )2 = (0,52)2 = 0,27 .

8.  :

1 -   = 1 - 0,27 = 0,73 .

*     ,  t     1   (  
t= 1, 2,..., 16).

  ^/ . 17.7   ,  
  .      
    ,  ,     ,
         
,  .  ,   , 
        . 
,       .

 ,       ,  -
     .   16  
,   ,      -
.         ,
    .