**Type I and Type II Errors - Making Mistakes in the Justice System

http://www.intuitor.com/statistics/T1T2Errors.html

This webpage uses the criminal trials in the US Justice system to illustrate hypothesis testing, type I error, and type II error. An applet allows the user to examine the probability of type I errors and type II errors under various conditions. An applet allows users to visualize p-values and the power of a test. Keywords: type I error, type II error, type one error, type two error, type 1 error, type 2 error

Date Issued	2006-02-06-
Resource Type	Lecture/Presentation (DCMI Type Vocabulary)
Audience	College --Undergrad Lower Division
Email Address	intuitor@intuitor.com
Date Of Record Creation	2005-05-19 14:10:56
Date Of Record Release	2005-05-19 14:10:56
Date Last Modified	2005-09-28 14:00:54
Statistical Topic	Statistical Inference and Techniques -- Significance Testing Principles -- Power
Material Type	Lecture Examples
Author's Name	Intuitor.com
Author's Organization	Intuitor.com
Supplemental - Evidence
Comments	The trial analogy is good for definining and differentiating between Type I and Type II errors; however, the analogy becomes awkward and labored as it continues to be used to define and illustrate the probabilities of these errors. It is probably better to switch to an actual statistical hypothesis test (a familiar one from a homework assignment) to explain and illustrate alpha and beta.
Intended User Role	Learner Teacher
Copyrights	Yes
Cost involved with use	Free to all
Math Level	Non-symbolic math

Date Record Checked: 1999-11-30 00:00:00

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**Type I and Type II Errors - Making Mistakes in the Justice System