. ε. 17.
, 8-10% .
Ε=2,62/30*100%=8,7%.
:
∑= *100%
∑(y- )2=∑(yi- )2+∑( -yi)2
∑(y- )2- , ∑(y- )2 = , ∑( -yi)2 ,
, .. , , .. y=f(x) . η2.
η2=
. , , , . η[0,1].
∑( - )2=∑(yi- ))2+∑( )2 = 7,5-1,094=6,064,
η2 =6,406/7,5=0,85 (85%)
F- , , . , n- , m- .
(SS) | (df) | (MS) | |
n-1 | |||
m | |||
n-m-1 |
. , , F- .
F=MS/MS
F- F- F(α,k1,k2), α k1 (), k2().
F- ,
:
F= , F=
F- . a b. :
mb=MS/σx
t- . - t- : t- b:
|
|
tb=b/mb
t- , α df (n-2).
, . , - b.
=a+bx
b∆( )
b-∆b≤b≤b+∆b
∆b=t*m*b, ∆b - b.
-2≤b≤3, , b- .
ma = MS .
b.
ta=a/∆ma
ta=a/ma>ta(α, df)
.
- .
mσyx=
t- .
( .
=a+bxnp
.
. :
yp-∆y≤ ≤yp+∆p, ∆p .
∆y=t*my, my-
mp=MS * , - .
- , . Excel.
- - -
, Const 0 , = 0. .
3 :
1.
R ( - ) | |
R- (- ) | |
R- ( - ) | |
- | |
2.
df | SS | MS | F | F | |
() | |||||
: |
3.
- | t- (. t- b) | 95% | 95% ( ) | ||
- | |||||
b |
95% -, α = 5% ( 95%).