| Abstract: | A simulation study was undertaken to assess the sampling stability of the variable loadings in linear discriminant function analysis. A factorial design was used for the factors of multivariate dimensionality, dispersion structure, configuration of group means, and sample size. A total of 32,400 discriminant analyses were conducted, based on data from simulated populations with appropriate underlying statistical distributions. A review of 60 published studies and 142 individual analyses indicated that sample sizes in ecological studies often have met that requirement. However, individual group sample sizes frequently were very unequal, and checks of assumptions usually were not reported. The authors recommend that ecologists obtain group sample sizes that are at least three times as large as the number of variables measured. |
| Genre: | Article |
| ProdID: | 5220729 |
| Citation Author: | Williams, B.K.; Titus, K. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 1285 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Ecology |
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| Citation Number Of Pages: | 11 |
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| Citation Phsyical Description: | 1275-1285 |
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| Citation Search Results Text: | Assessment of sampling stability in ecological applications of discriminant analysis; 1988; Article; Journal; Ecology; Williams, B.K.; Titus, K. |
| Citation Start Page: | 1275 |
| Citation Volume: | 69 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Assessment of sampling stability in ecological applications of discriminant analysis; 1988; Article; Journal; Ecology; Williams, B.K.; Titus, K. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.jstor.org/stable/info/1941283 |
| Date Other: | Wed, 16 Jun 2010 12:19 -0500 |
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