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Weibull Distribution

Fit, evaluate, and generate random samples from Weibull distribution

Functions

makedist Create probability distribution object
fitdist Fit probability distribution object to data
dfittool Open Distribution Fitting app
cdf Cumulative distribution functions
icdf Inverse cumulative distribution functions
iqr Interquartile range
mean Mean of probability distribution
median Median of probability distribution
negloglik Negative log likelihood of probability distribution
paramci Confidence intervals for probability distribution parameters
pdf Probability density functions
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
random Random numbers

Using Objects

WeibullDistribution Weibull probability distribution object

Examples and How To

Fit Probability Distribution Objects to Grouped Data

Fit probability distribution objects to grouped sample data, and create a plot to visually compare the pdf of each group.

Compare Multiple Distribution Fits

Fit multiple probability distribution objects to the same set of sample data, and obtain a visual comparison of how well each distribution fits the data.

Concepts

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.

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