Examlex
The effect of surface friction extends to a height of about 500 m (1600 ft.) although it may vary with wind speed, season, time of day, and pressure patterns.
Test Statistic
A numerical value calculated from a statistical test's data, used to determine whether to reject the null hypothesis.
Degrees Of Freedom
The number of independent values or quantities that can vary in the analysis without violating any constraints.
Significance Level
The probability threshold below which the null hypothesis is rejected in a statistical test, often denoted by alpha (α).
Cohen's D
A measure of effect size indicating the standardized difference between two means.
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