Hi, I just conducted a Hierarchical Regression Analysis and although the interaction is significant, the β for regression line is almost Zero (Or to be more exact, -0.004586).
How should I interpret this result?
The rate of change is small and negative but is signif. Best, D. Booth
Since the Beta depends on the magnitude of the values of the variables being compared, a very small B could simply reflect that one of the variables is much larger than the other. I would suggest scaling all of the features in the model and seeing if you get more understandable B values. I typically use Z-score normalization: https://en.wikipedia.org/wiki/Feature_scaling#Standardization_(Z-score_Normalization)
Scaling the features also makes it possible to compare the Betas between the different features.
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