http://www.graphpad.com/articles/pvalue.htm.
A discussion of the meanings of P Value, Sample and Population.
Posts Tagged ‘P Value’
Sample, Population and P Value Discussion
Posted by nepeht on November 22, 2008
Posted in Glossary, Notes | Tagged: P Value, Population, Sample | Leave a Comment »
P Value
Posted by nepeht on November 22, 2008
http://en.wikipedia.org/wiki/P-value.
In statistical hypothesis testing, the p-value is the probability of obtaining a result at least as extreme as the one that was actually observed, given that the null hypothesis is true. The fact that p-values are based on this assumption is crucial to their correct interpretation.
More technically, a p-value of an experiment is a random variable defined over the sample space of the experiment such that its distribution under the null hypothesis is uniform on the interval [0,1]. Many p-values can be defined for the same experiment.
From Wikipedia.
Posted in Glossary, Notes | Tagged: P Value, Probability | Leave a Comment »
P-Value Calculator by GraphPad Sofware
Posted by nepeht on November 21, 2008
Posted in Notes, Potentially Helpful Sites | Tagged: P Value | Leave a Comment »
