, . - , .
, ' , ' , . . ϳ 쳺 ' , .
, , . ' . ' , , , .
, ' x1, x2, , k , , ' .
f(x1, x2, , k), , () .
. | , f(x1, x2, , k), .
(, x1|, x2|, , k) f(x)=M(Y / ), =|(x1, x2, , k).
() () f(x)= M(y/x) ( ).
1. , yi (i=1,2.,n) f(xi β), i= (1,,k- , xi i- :
.
b. .
2. , f(xi, b),
.
|| | ().
3. yi| f(xi, b),
.
.
( .)
|
|
̳ ': ( ) ( ).
' ' , , Y X . , ( ), , () . , , .
' , , . , , 䳿 . . г , ', .
' : ŷi = f(xi) + ei
ŷi - ;
f(xi) - , ( ), | ' ;
ei - , 䳿 , , . ' 䳿 : , , , , .
˳
. - , y, Y , X , :
y |
x |
( |
) |
A1 |
1× |
+ |
:= |
A0 |
(x)- , ;
A0 - ;
1 - .
A0 =0, . 1 ' . | |, | , . 1 .
0|, 1 | ( , | ), | yi , :
S(y ŷ)2 = S(y 0 1x) 2 min
|
|
, :
.
:
, . 1 A0, , , , , , . ϳ . , , .
ֳ
' ( , )
(1) (A0)
Y :
X1 | 16,24 | 16,19 | 16,25 | 16,41 | 16,36 | 16,52 | 16,64 | 16,81 | 16,93 | 16,83 | 16,90 | 16,23 | 16,30 | 16,33 | 16,74 | 16,72 |
Y1 |
, Mathcad
1.
, :
, ,
:
,
=136 =264,4
SXX = XX, SYY = YY, SYX = XY,
SXX = 1496 SYY = 4370 SYX = 2255
, :
N=16, |
, A=16*1496 -1362 =5440,
B |
N |
SYX |
× |
SX |
SY, |
× |
- |
:= |
C |
× |
:= |
SY-X×SXY, |
× |
SXX |
³ 0:
A0 = = 16,326.
1
A1= , A1 = = 0,023.
y(x) = 0,023 x +16,326.
.1
.2