Examlex
If as the variable on the Y-axis rises the variable on the X-axis rises, the relationship between X and Y is said to be a positive relationship.
Z-test Approximation
A statistical method that uses the Z-distribution to approximate the significance of observed differences, typically used when sample sizes are large and the standard deviation is known.
Wilcoxon Test Statistic
A non-parametric test statistic used to compare two paired samples to assess whether their population mean ranks differ.
Null Hypothesis
A hypothesis that assumes no statistical significance or effect exists in a set of observations.
Level Of Significance
The threshold below which a statistical result is considered significant, indicating that an observed effect is unlikely to be due to chance alone.
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