I conducted a regression analysis using R's lm() function. One of the independent variables shows no significance (p = 0.89), which contradicts the hypothesis that is should have a significantly positive effect on the dependent variable.

How do you interpret that? Can you say that it has no positive effect on the dependent variable, just because it is not significant – even though it is not significantly negative?

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#### Best Answer

You can't say that. You can only say you've not been able to confirm with a reasonable degree of confidence that it has a positive effect. Looking at a confidence interval of the regression coefficient will be more informative – you may be able to say you're confident it has a negligible effect.

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