# p-Value

Encyclopedia
Edited by: Published: 2008

• ## Subject Index

The probability value (abbreviated "p-value"), which can range from 0.0 to 1.0, refers to a numeric quantity computed for sample statistics within the context of hypothesis testing. More specifically, the p-value is the probability of observing a test statistic that is at least as extreme as the quantity computed using the sample data. The "probability" is computed using a reference distribution that is generally derived using the null hypothesis. The phrase extreme is usually interpreted with respect to the direction of the alternative hypothesis—if two tailed, then the p-value represents the probability of observing a test statistic that is at least as large in absolute value as the number computed from sample data. Put another way, the p-value can be interpreted as the likelihood that ...

• All
• A
• B
• C
• D
• E
• F
• G
• H
• I
• J
• K
• L
• M
• N
• O
• P
• Q
• R
• S
• T
• U
• V
• W
• X
• Y
• Z

## Methods Map

Research Methods

Copy and paste the following HTML into your website