Y = β0 + β1 X1 + β2 X2 + β3 X12 + β4 X22 + β5 X1 X2 + ε

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46. Interaction between variables – 3D-graphs

Some linear models with two continuous X-variables

Diagram Y/X1

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Extra

Y   X1   X2
10   2    1
17   3    2
48   4    5
27   1    2
55   5    6
26   6    4
 9   7    3
16   8    4

β0

β1

β2

β3

β4

β5

3D-graphs (Eng)