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When we move up or down a given demand curve, what is held constant?
Significance Level
The probability of rejecting the null hypothesis when it is actually true; a threshold chosen by the researcher to indicate the level of evidence needed to reject the null hypothesis.
Kruskal-Wallis Test
A nonparametric statistical test used to compare three or more independent samples to determine if they originate from the same distribution.
P-value
The probability of obtaining a test statistic at least as extreme as the one that was actually observed, assuming that the null hypothesis is true.
Test Statistic
A value calculated from sample data during a hypothesis test that is compared to a threshold value to decide whether to reject the null hypothesis.
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