Examlex
The Dow-Jones Industrial Average index is the broadest U.S. stock market index.
Random Error
An unpredictable variation in data or experimental results, which occurs without a discernible pattern.
Systematic Variance
Variability in a set of scores that is the result of the independent variable; statistically, the variability of each group mean from the grand mean of all subjects.
Null Hypotheses
A hypothesis stating there is no significant difference or effect, often denoted as H0, serving as the default assumption to be tested.
Type I Error
An incorrect decision to reject the null hypothesis when it is true.
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