On the Statistical Analysis of Ordinal Data When Extravariation is Present

J. Jansen

Journal of the Royal Statistical Society Series C, 1990, vol. 39, issue 1, 75-84

Abstract: Threshold models can be useful for analysing ordered categorical data, like ratings. Such models provide a link between the ordinal scale of measurement and a linear scale on which treatments are supposed to act. In this paper a simple agricultural plot experiment is considered with two sources of variation, namely between‐plot variation and within‐plot variation. So far, methods for analysing ordered categorical data are not capable of handling such a situation adequately. It is shown that for a threshold model with two sources of variation maximum likelihood estimates can be obtained by iterative weighted least squares. The computer package Genstat is used to carry out the computations. to illustrate the methods an example concerning damage in strawberries due to the fungus Phytophtora fragariae is given.

Date: 1990
References: Add references at CitEc
Citations: View citations in EconPapers (4)

Downloads: (external link)
https://doi.org/10.2307/2347813

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:bla:jorssc:v:39:y:1990:i:1:p:75-84

Ordering information: This journal article can be ordered from
http://ordering.onli ... 1111/(ISSN)1467-9876

Access Statistics for this article

Journal of the Royal Statistical Society Series C is currently edited by R. Chandler and P. W. F. Smith

More articles in Journal of the Royal Statistical Society Series C from Royal Statistical Society Contact information at EDIRC.
Bibliographic data for series maintained by Wiley Content Delivery ().