Wilcoxon Signed Rank Test
A nonparametric alternative to the Paired t-Test which is similar to the Fisher Sign Test. This testassumes that there is information in the magnitudes of the differences between paired observations, as well as the signs. Take the paired observations, calculate the differences, and rank them from smallest to largest by Absolute Value. Add all the ranks associated with Positive differences, giving the 
statistic. Finally, the P-Valueassociated with this statistic is found from an appropriate table. The Wilcoxon test is an R-Estimate.
- Principal Ideal
- Principal Normal Vector
- Principal Quintic Form
- Principal Radius of Curvature
- Principal Value
- Principal Vector
- Principal Vertex
- Principle
- Pringsheim's Theorem
- Printer's Errors
- Prior Distribution
- Prism
- Prismatic Ring
- Prismatoid
- Prismoid
- Prisoner's Dilemma
- Prizes
- Probability
- Probability Axioms
- Probability Density Function
- Probability Distribution Function
- Probability Function
- Probability Inequality
- Probability Integral
- Probability Measure