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One-sided Test
A hypothesis test in which the alternative hypothesis specifies either an increase or a decrease, but not both.
P-value
The probability of obtaining a statistical summary (e.g., the difference in means) at least as extreme as the one observed in a study assuming the null hypothesis is true.
Two-sided Significance Tests
Statistical tests that assess the significance of an effect in either direction, allowing for the evaluation of both positive and negative differences.
Null Hypothesis
A statistical hypothesis that assumes no significant difference or relationship exists between certain parameters or distributions.
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