Hello,
because there is no obvious solution, I'll bring this to discussion here:
Example table
x y
-2 -4,84
-1 -1,74
0 0
1 2,38
2 3,82
3 7,17
4 9,28
gives for a linear regression the equitation (as shown in status bar)
y= 2.286 ∙ x − 6.847 for a line-diagram
y= 2.286 ∙ x + 0.01 for an XY-diagram
The wrong equitation in the line-diagram is due to the fact, that for
line diagrams not the real x-values but the values 1, 2, … are used.
The question is now, whether the regression curve should do so and it is
enough, if we tell it to the user. Or should the calculation use the
x-values of the data series, if they provide a datatyp to calculate with?
kind regards
Regina
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