Changes in version 1.24.1 (2024-01-09) o The Gumbel goodness-of-fit test is added. o The exponential goodness-of-fit test is added. Changes in version 1.23.8 (2023-08-08) o The new weibull.ic function provides the estimates of the Weibull parameters with interval censored data. o The new wp.plot function provides the Weibull probability plot for the two-parameter Weibull distribution. o The new Wdata variable provides the collection of the data sets following the Weibull distribution. Changes in version 1.22.12 (2022-12-02) o The new weibull.rm function provides robust parameter estimates for the two-parameter Weibull distribution.