Examlex
(Figure: Externalities A) In this figure, which two points include a positive externality?
Level Of Significance
The threshold used in statistical tests to decide whether an observed effect is considered statistically significant.
P-Value
A statistical metric that helps you determine the significance of your research results, essentially telling you how likely your data would have occurred by random chance.
One-Tail Test
A statistical test where the region of rejection is on only one side of the sampling distribution, used when the research hypothesis predicts a direction of the effect.
Two-Tailed Test
A hypothesis testing approach that allows for the possibility of an effect in two directions, either higher or lower than the null hypothesis, and hence tests for the presence of any significant difference.
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