Current issue: 58(5)
Select issue
Silva Fennica 1926-1997
1990-1997
1980-1989
1970-1979
1960-1969
1950-1959
1940-1949
1926-1939
Acta Forestalia Fennica
1992-1999
1984-1991
1974-1983
1968-1973
1953-1968
1933-1952
1913-1932
Articles by Laura Koskela
Category : Research article
article id 277,
category
Research article
(2007).
Some aspects of the sampling distribution of the Apportionment Index and related inference.
Silva Fennica
vol.
41
no.
4
article id 277.
https://doi.org/10.14214/sf.277
Keywords:
harvesting;
bucking;
dissimilarity index;
multinomial distribution;
overlapping coefficient
Abstract |
View details
|
Full text in PDF |
Author Info
As customer-oriented production strategies have gained ground in the sawmill industry, proper measurement of the fit between the log demand and log output distributions has become of crucial importance. The prevailing means of measuring the outcome is the so-called Apportionment Index (AI), which is calculated from the relative proportions of the observed and required distributions. Although some statistical properties of the AI have recently been examined and alternative means of measuring the bucking outcome have been suggested, properties of the sampling distribution of the AI have not yet been widely studied. In this article we examine the asymptotic sampling distribution for the AI by assuming a multinomial distribution for the outcome. Our results are based mainly on large-sample normal approximations. Also some studies of the determination of the number of logs needed to obtain a specified level of accuracy of the AI have been carried out.
-
Koskela,
University of Tampere, Dept of Mathematics, Statistics and Philosophy, FI-33014 University of Tampere, Finland
E-mail:
laura.koskela@uta.fi
- Sinha, Indian Statistical Institute, Kolkata, India E-mail: bks@nn.in
- Nummi, University of Tampere, Dept of Mathematics, Statistics and Philosophy, FI-33014 University of Tampere, Finland E-mail: tn@nn.fi
Click this link to register to Silva Fennica.
If you are a registered user, log in to save your selected articles for later access.
Your selected articles
Silva Fennica ·
Finnish Society of Forest Science
