- Concepts ›
- Statistics ›

Published by MBA Skool Team, Last Updated: January 19, 2014

Hazard rate is defined as ratio of density function and the survival function.

For, the density function of the time to failure, f(t), and the reliability function, R(t), the hazard rate function for any time, t, can be defined as

h(t) = f(t) / R(t)

Where, f(t) is the probability density function (PDF) representing a failure distribution and R(t) is the survival function.

In words: the probability that ** if you survive to t**, you will succumb to the event in the next instant.

Average failure rate is the fraction of the number of units that fail during an interval by the number of units alive at the beginning of the interval.

In the limit of smaller time intervals, the average failure rate measures the rate of failure in the next instant on time for those units (conditioned on) surviving to time t, known as instantaneous failure rate,

Hazard vs. Density

When you are born, you have a certain probability of dying at any age; that’s the probability density.

Example: a woman born today has, say, a 1% chance of dying at 80 years.

However, as you survive for awhile, your probabilities keep changing

Example, a woman who is 79 today has, say, a 5% chance of dying at 80 years.

Hazard rates are applied to non repairable systems.

Hence, this concludes the definition of Hazard Rate along with its overview.

This article has been researched & authored by the Business Concepts Team. It has been reviewed & published by the MBA Skool Team. The content on MBA Skool has been created for educational & academic purpose only.

Browse the definition and meaning of more similar terms. The Management Dictionary covers over 2000 business concepts from 5 categories.

Continue Reading:

Important Definitions:

What is MBA Skool?About Us

MBA Skool is a Knowledge Resource for Management Students, Aspirants & Professionals.

Business Courses

Quizzes & Skills

Quizzes test your expertise in business and Skill tests evaluate your management traits

Related Content

All Business Sections

Write for Us

Write & Contribute Business Content

2011-2023 | MBASkool.com