ScholarLens Back to search
1985•Journal of the Royal Statistical Society Series B (Statistical Methodology)Requires access

Modelling Data Containing Exact Zeroes Using Zero Degrees of Freedom

Andrew F. Siegel

Open publisher page 32 citations

Abstract

SUMMARY The noncentral chi-squared distribution with zero degrees of freedom can be used to model continuous data of a variety of shapes that also contain exact zero values. Existence and uniqueness of the maximum likelihood estimates for the scaled non-central chi-squared distribution with zero degrees of freedom are established, computational methods are considered, and an illustrative example is given.

About this research paper

What this paper is about

SUMMARY The noncentral chi-squared distribution with zero degrees of freedom can be used to model continuous data of a variety of shapes that also contain exact zero values. Existence and uniqueness of the maximum likelihood estimates for the scaled non-central chi-squared distribution with zero degrees of freedom are established, computational methods are considered, and an illustrative example is given.

Why it matters

OpenAlex reports 32 citations for this work. Citation counts describe recorded attention and do not establish research quality.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

SUMMARY The noncentral chi-squared distribution with zero degrees of freedom can be used to model continuous data of a variety of shapes that also contain exact zero values. Existence and uniqueness of the maximum likelihood estimates for the scaled non-central chi-squared distribution with zero degrees of freedom are established, computational methods are considered, and an illustrative example is given.

Key concepts: Degrees of freedom (physics and chemistry), Zero (linguistics), Mathematics, Uniqueness, Distribution (mathematics), Applied mathematics, Square (algebra), Mathematical analysis

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
Modelling Data Containing Exact Zeroes Using Zero Degrees of Freedom — Research Paper | ScholarLens