Weibull 分布

Statistics and Machine Learning Toolbox™ 提供了几种处理 Weibull 分布的方法。

• 可通过对样本数据进行概率分布拟合或通过指定参数值来创建概率分布对象 WeibullDistribution。然后使用对象函数来计算分布、生成随机数等。

• 使用分布拟合器以交互方式处理 Weibull 分布。您可以从该 App 中导出对象并使用对象函数。

• 将分布特定的函数与指定的分布参数结合使用。分布特定的函数可以接受多种 Weibull 分布的参数。

• 将一般分布函数（cdficdfpdfrandom）与指定的分布名称 ('Weibull') 和参数结合使用。

对象

 WeibullDistribution Weibull probability distribution object

App

 分布拟合器 Fit probability distributions to data 概率分布函数 Interactive density and distribution plots

函数

创建 WeibullDistribution 对象

 makedist Create probability distribution object fitdist 对数据进行概率分布对象拟合

使用 WeibullDistribution 对象

 cdf 累积分布函数 icdf Inverse cumulative distribution function iqr Interquartile range mean Mean of probability distribution median Median of probability distribution negloglik Negative loglikelihood of probability distribution paramci Confidence intervals for probability distribution parameters pdf 概率密度函数 proflik Profile likelihood function for probability distribution random Random numbers std Standard deviation of probability distribution truncate Truncate probability distribution object var Variance of probability distribution
 wblcdf Weibull cumulative distribution function wblpdf Weibull probability density function wblinv Weibull inverse cumulative distribution function wbllike Weibull negative log-likelihood wblstat Weibull mean and variance wblfit Weibull parameter estimates wblrnd Weibull random numbers wblplot Weibull probability plot
 mle Maximum likelihood estimates mlecov Asymptotic covariance of maximum likelihood estimators
 distributionFitter Open Distribution Fitter app histfit 具有分布拟合的直方图 qqplot Quantile-quantile plot randtool Interactive random number generation wblplot Weibull probability plot

主题

Weibull Distribution

The Weibull pdf is an appropriate analytical tool for modeling the breaking strength of materials. Current usage also includes reliability and lifetime modeling.