censtats: Produces summary statistics using ROS, MLE, and K-M methods.

In NADA: Nondetects and Data Analysis for Environmental Data

Produces summary statistics using ROS, MLE, and K-M methods.

Description

A convenience function that produces a comparative table of summary statistics obtained using the cenros, cenmle and cenfit routines. These methods are, Regression on Order Statistics (ROS), Maximum Likelihood Estimation (MLE), and Kaplan-Meier (K-M).

Usage

    censtats(obs, censored)

Arguments

obs	A numeric vector of observations.
censored	A logical vector indicating TRUE where an observation in x is censored (a less-than value) and FALSE otherwise.

Details

If the data do not fulfill the criteria for the application of any method no summary statistics will be produced.

Value

A dataframe with the summary statistics.

Author(s)

R. Lopaka Lee <[e-mail]>

Dennis Helsel <[e-mail]>

References

Helsel, Dennis R. (2005). Nondectects and Data Analysis; Statistics for censored environmental data. John Wiley and Sons, USA, NJ.

Examples

    data(DFe)
    with(DFe, censtats(Summer, SummerCen))

NADA documentation built on Aug. 29, 2025, 5:35 p.m.