Examlex
Why is it so difficult to track the crime rate over time?
Alternative Hypothesis
A statistical hypothesis that contradicts the null hypothesis, suggesting there is an effect or a difference.
One-tailed Test
A statistical test where the region of rejection is on only one side of the sampling distribution.
Critical Value
A point on the scale of the test statistic beyond which we reject the null hypothesis; it is a threshold used to determine the critical region for statistical significance testing.
Test Statistic
A figure determined from data samples, which is used during a hypothesis test to evaluate whether to refuse the null hypothesis.
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