. , .
, . , y=a+bx -, :
(.) x | (.) y | yx | xˆ2 | yˆ2 | |
.. | 17.2 | 2999.6 |
∑y=na+b(∑x)
∑xy=a(∑x)+b(∑x²)
n=5 :
∑x=270, ∑y=86, ∑xy=4875, ∑x²=14998
:
86=5a+270b
4875=270a+14998b
a b a=-10.5 b=0.55. -10.5 0.55 .
y=-10.5+0.55x
:
R=
-0.09. , .
5 , ( 1). , 1 10 , . :
1- | 2- | 3- | 4- | 5- | |
1. | |||||
2. , , .. | |||||
3. | |||||
4. , | |||||
5. , | |||||
6. , |
5 6 . . , R.
|
|
R = .
, = n-
= .
= =15
: =() =
X= = ,
, W , = * , :
W= =
=
, , . B= *X, - :
B= * =
= .
:
= B* = *
= .
:
= =
4 . :
= B* = * =
=
= =
4 :
= B* = * =
=
= =
:
= B* = * =
=
= =
, . . R:
= = .
:
= = = 17,5
R , S : S= =
+ + + + =6,25+2,25+2,25+0,25+0,25+6,25=17,5
:
W= = = 0,04
W=
W. :
=m (n-1)=*W= 5(6-1)* 0,04= 1
K= n-1= 6-1 =5 =0,05 . 0,25. , W , .