Exponential and Piecewise Exponential Distributions
نویسنده
چکیده
Since lifetimes are almost always non-negative, the normal model/distribution may not be appropriate. An easy to use, positive distribution is the exponential distribution. To a less extend, exponential distributions to the survival analysis is like normal distributions to the linear model/ANOVA. Piecewise exponential distribution is also used to bridge/connect the parametric and nonparametric method/model, with the view that when the number of pieces grows to infinite (along with the sample size) the parametric model becomes the non-parametric model.
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