failure rate function
61Mean time between failures — (MTBF) is the predicted elapsed time between inherent failures of a system during operation.[1] MTBF can be calculated as the arithmetic mean (average) time between failures of a system. The MTBF is typically part of a model that assumes the… …
62Sample size determination — is the act of choosing the number of observations to include in a statistical sample. The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample …
63Sexual abstinence — is the practice of voluntarily refraining from some or all aspects of sexual activity. Common reasons to deliberately abstain from the physical expression of sexual desire include religious or philosophical reasons (e.g., chastity), material… …
64Least squares — The method of least squares is a standard approach to the approximate solution of overdetermined systems, i.e., sets of equations in which there are more equations than unknowns. Least squares means that the overall solution minimizes the sum of… …
65Carbon nanotube — Not to be confused with Carbon fiber. Part of a series of articles on Nanomaterials Fullerenes …
66Service life — A product s service life is its expected lifetime, or the acceptable period of use in service. It is the time that any manufactured item can be expected to be serviceable or supported by its manufacturer. Expected service life consists of… …
67Micro Instrumentation and Telemetry Systems — MITS logo used from 1972 to 1975. Micro Instrumentation and Telemetry Systems (MITS) was an American electronics company founded in Albuquerque, New Mexico that began manufacturing electronic calculators in 1971 and personal computers in 1975.[1] …
68Official statistics — on Germany in 2010, published in UNECE Countries in Figures 2011. Official statistics are statistics published by government agencies or other public bodies such as international organizations. They provide quantitative or qualitative information …
69Kaplan–Meier estimator — The Kaplan–Meier estimator,[1][2] also known as the product limit estimator, is an estimator for estimating the survival function from life time data. In medical research, it is often used to measure the fraction of patients living for a certain… …
70Monte Carlo method — Not to be confused with Monte Carlo algorithm. Computational physics …
