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() .

: = u^. , , :

- = (â0 + â1x+ u^) (â0 + â1 ) = â1 (x - ) + u^

- ) 2 = â1 (x - ))2 + 2 â1 x - ) u + =

= â1 (x - ))2 + 2 â1 x - )(( - ) â1 (x - )) + .

â1 = , = â1 ,

.

= - )2 + .

( ) Du = = yi yi^.

D = yi .

Dy^ = â1 (x - )) 2 = - )2 yi^ .

 

: D = D y^ + Du, = - )2 + .

R2 = 1 - = (0;1)

Y, Y.

, R2 ¢, : (¢ );

0 ;

.

R =√ R2 (-1;1) :

¢ Y, R 1,

¢ Y, R 0.

, R > 0, Y , R > 0 ^1 > 0;

R < 0, Y , R < 0 ^ 1 < 0;

R (X,Y) = 0, X Y .

( ) 0: s ả0 = s u^

( ) 1 sả1 = su^

:

()

Y* - tα; (n-2) σ u^ < Y* < Y* + tα; (n-2) σ u^

ta - ', α- , k = n - 2 .

 

1 񳿻

 

.

2. :

Y

 

 

: : : (; Y)

˳ : .

: .





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