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I'm playing around with PCA in Orange. I painted 10 data points and look at their PCA components. The Data Table suggests they should be orthogonal in the (x, y) coordinates as the dot product is 0. Data Table

However, when I visualize these components in a scatter plot, the two vectors don't look like they are perpendicular. Scatter Plot

Looking a the scatter plot, it seems that the y-axis is not 0-based. Can someone please help explain?

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