7942


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równanie

regresji

*r*

kąt między osią

zY a linią regresji

z'Y=0,0z1

1,0

45o

z'Y=rz1

(0,0 - 1,0)

(0o - 45o)

z'Y=1,0z1

0,0

0o

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e

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pr21 = r2Y1.2 = a/(a +d) pr22 = r2Y2.1 = b/(b + d)

sr21 = r2Y(1.2) = a sr22 = r2Y(2.1) = b

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© Jerzy Brzeziński (2008). Wykłady z metodologii ... Blok 3

5

Y

bY1

a

0

X1

z'Y=rz1

z'Y=0,0z1

ZY

z'Y=1,0z1

0

Z1

Z

Y'=bY1.2X1+bY2.1X2+a

C

Y

B

Y'=bY2X2+a

D

Y'=bY1X1+a

A

X2

a

X1

0

Zmienna X2

Zmienna X1

c

a

b

d

Zmienna Y

R2 Y.12 = a + b + c

rY1 = a + c

2

rY2 = b + c

2

Y

RY.12(max)=1,00

12

11

10

9

8

7

6

5

4

3

2

1

0

12

6

7

8

9

10

11

5

4

3

2

1

1

Y'

RY.12 = 0,71 Σ (Yk-Y'k)2 = 81,60



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