digplanet beta 1: Athena
Share digplanet:

Agriculture

Applied sciences

Arts

Belief

Chronology

Culture

Education

Environment

Geography

Health

History

Humanities

Language

Law

Life

Mathematics

Nature

People

Politics

Science

Society

Technology

The survival function, also known as a survivor function or reliability function, is a property of any random variable that maps a set of events, usually associated with mortality or failure of some system, onto time. It captures the probability that the system will survive beyond a specified time.

The term reliability function is common in engineering while the term survival function is used in a broader range of applications, including human mortality. Another name for the survival function is the complementary cumulative distribution function.

## Definition

Let T be a continuous random variable with cumulative distribution function F(t) on the interval [0,∞). Its survival function or reliability function is:

$R(t) = P(\{T > t\}) = \int_t^{\infty} f(u)\,du = 1-F(t).$

## Properties

Every survival function R(t) is monotonically decreasing, i.e. $R(u) \le R(t)$ for all $u > t$.

The time, t = 0, represents some origin, typically the beginning of a study or the start of operation of some system. R(0) is commonly unity but can be less to represent the probability that the system fails immediately upon operation.

The survivor function is right-continuous.

Original courtesy of Wikipedia: http://en.wikipedia.org/wiki/Survival_function — Please support Wikipedia.
A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia.
 443870 videos foundNext >
 Introduction to Survival AnalysisPresented by: John Klein, PhD, Director & Professor, Division of Biostatistics, Medical College of Wisconsin. We examine statistical methods that can be used... Tool Logic SVC1B vs SE MT908 11 Function Credit Card Size Survival Pocket ToolThis is a review of wallet credit card sized survival multi tools. The two leading tools are the Tool Logic SVC1B Survival Card Tool and the SE MT908 11 Func... Motorola Droid Survival Function Review, Equip 2 EndureJust got a gadget in my collection, the Motorola Droid. I have create a survival page for my Droid that includes a Flashlight, Maps, Compass, Survival Guide,... Multi-function compass - compact survival kitCompass with fire starter,whistle, flashlight, magnify glass and weather station. Check out our website: http://www.survivalistunite.com. SOL Origin Multi-Function ToolGet Out There gear reviewer Drew tests SOL's Origin Multi-Function Tool and survival kit. Whether you are going on a quick day-hike or a multi-day wilderness... Henry AR7 Survival Rifle Ammunition Accuracy And Function TestAmmo test for function and accuracy using the Henry AR7 Survival Rifle. I should have taken more time lining up my shots. This test was conducted benched at ... BearFlare - A Multi-Function Survival Tool.movBearFlare - A Multi-function Survival Tool - Safe Defensive Deterent "Grizzly Attacks" "Mountain Lion Attacks" "Bear Attacks" "Safety Flare" Accidents. 3 Function Personal Survival ShelterOur PSS is a 3 function shelter for one person, It is a Poncho, a Tarp, and a Hammock. This piece of gear works well at each of these functions. It is light ... Motorola Droid Survival Function Review, Equip 2 Endurecheckout http://goo.gl/B5EMe to receive your absolutely free brand new motorola droid! Deal Extreme Wilderness Survival Multi-Function Tools Flint, Whistle, Compass, Saws, Ruler, Yellowbuy it here: http://www.dealextreme.com/p/wilderness-survival-multi-function-tools-flint-whistle-compass-saws-ruler-yellow-5-in-1-56884 \$4.80.
 443870 videos foundNext >

We're sorry, but there's no news about "Survival function" right now.

 Limit to books that you can completely read online Include partial books (book previews) .gsc-branding { display:block; }

Oops, we seem to be having trouble contacting Twitter

# Talk About Survival function

You can talk about Survival function with people all over the world in our discussions.

#### Support Wikipedia

A portion of the proceeds from advertising on Digplanet goes to supporting Wikipedia. Please add your support for Wikipedia!