Examlex
Random assignment guarantees that participant characteristics do not become a confounding variable.
Contingency Table
A table used in statistics to display the frequency distribution of variables to show the relationship between them.
Level of Significance
The probability of rejecting the null hypothesis in a statistical test when it is in fact true; commonly set thresholds include 0.05 or 0.01.
Null Hypothesis
The null hypothesis is a statement or hypothesis that there is no significant difference or effect, typically to be tested against an alternative hypothesis.
Critical Value
The threshold in a statistical test such that if the calculated test statistic is beyond this point, the null hypothesis is rejected.
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