Failure Rate

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failure rate

[′fāl·yər ‚rāt]
The probability of failure per unit of time of items in operation; sometimes estimated as a ratio of the number of failures to the accumulated operating time for the items.

Failure Rate


the index of dependability of a device that is not subject to repair. Most often it is used to define the dependability of the subassemblies of electronic and automatic systems. In numerical terms the failure rate is equal to the failure probability of the device during a time period beginning at a certain moment provided that no failure has occurred before.

Failure Rate


an index of the reliability of repairable tools and machines. The failure rate is defined as the average number of failures of the repairable device per unit of time and varies with time.

References in periodicals archive ?
Nonparametric Estimates of Career Duration To help understand career duration in MLB, we calculate yearly hazard functions as
Table 1 shows that when the exponential distribution is used for the hazard function, the RMSE is 87.
We first specify the shape parameters of the hazard function as follows:
An actuarial hazard function is simply a series of actuarial hazard rates strung together in chronological order.
The hazard function of this distribution is defined as
0](t) denotes a baseline hazard function, x denotes a set of characteristics, and [C.
For the Weibull model, the hazard function is specified as follows:
After determining that none of the covariates violated the proportional hazards assumptions required by the Cox Model, the model was refitted to determine the effects of the predictors on the hazard function.
1) Our model permitted the hazard function to vary over the duration with changes differing across individuals, in contrast to standard reduced form models which restricted to uniformity for all individuals, ceteris paribus.
The hazard rate or hazard function is the conditional probability that a person leaves employment in a very short time period, given that the person remains employed until that time period.
Carroll (1984b: 85) has summarized the tenor of most findings, referring to the Makeham function as the most common representation of the continuous-decline hypothesis: "Makeham's Law, a stochastic model of the hazard function with age-dependent properties, is becoming accepted as the baseline model for the study of organizational mortality.
Assume the corresponding hazard function for this set of firms is the one arbitrarily depicted as the dotted line in Figure 1A.

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