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Crabs (M vs F) data
The data set (and description) can be downloaded here:
http://stat.ethz.ch/Teaching/Datasets/crabs.dat
Description:
TITLE : crabs
KEYWORDS (statist) : discriminant analysis
APPLICATION AREA : biology, zoology, environment
SHORT DESCRIPTION :
Leptograpsus crabs
Data from Campbell & Mahon (1974) on the morphology of
rock crabs of genus Leptograpsus. There are 50 specimens
of each sex of each of two colour forms.
Variables are:
- colour form (B = blue form, O = orange form);
- sex (M = male, F = female);
- index within each group of 50;
- frontal lip of carapace, in mm;
- rear width of carapace, in mm;
- length along the midline of carapace, in mm;
- maximum width of carapace, in mm;
- body depth, in mm.
DIM.(VAR./OBS.) : 5 / 200
/ LITERATURE : /
Ripley (1996): Pattern Recognition and Neural Networks.
Descriptive statistics:
Dataset= crab_MvsF : n= 200 , d= 5
Class1: n= 100
Covariance matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 11.9950 7.2443 25.4593 27.8510 12.0232
[2,] 7.2443 4.6678 15.8769 17.6200 7.2970
[3,] 25.4593 15.8769 55.8189 61.9070 25.5830
[4,] 27.8510 17.6200 61.9070 69.3930 27.9438
[5,] 12.0232 7.2970 25.5830 27.9438 12.2096
Correlation matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 1.0000 0.9681 0.9839 0.9653 0.9935
[2,] 0.9681 1.0000 0.9836 0.9790 0.9666
[3,] 0.9839 0.9836 1.0000 0.9947 0.9800
[4,] 0.9653 0.9790 0.9947 1.0000 0.9600
[5,] 0.9935 0.9666 0.9800 0.9600 1.0000
Median: 15.5579 11.9048 32.6514 36.8386 14.0993
Mean: 15.734 11.99 32.851 36.999 14.337
MCD-estimated:
MDC-0.975-Mean: 15.5211 11.8256 32.3144 36.3211 14.1289
MDC-0.750-Mean: 15.5211 11.8256 32.3144 36.3211 14.1289
MDC-0.500-Mean: 15.5211 11.8256 32.3144 36.3211 14.1289
Class2: n= 100
Covariance matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 12.5169 9.3825 23.2727 25.3404 11.6479
[2,] 9.3825 7.5114 18.1249 19.9274 8.9189
[3,] 23.2727 18.1249 44.9301 49.2987 22.1403
[4,] 25.3404 19.9274 49.2987 54.4781 24.1416
[5,] 11.6479 8.9189 22.1403 24.1416 11.1772
Correlation matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 1.0000 0.9676 0.9814 0.9704 0.9848
[2,] 0.9676 1.0000 0.9866 0.9851 0.9734
[3,] 0.9814 0.9866 1.0000 0.9965 0.9880
[4,] 0.9704 0.9851 0.9965 1.0000 0.9783
[5,] 0.9848 0.9734 0.9880 0.9783 1.0000
Median: 15.5755 13.6788 31.7398 36.3075 13.8205
Mean: 15.432 13.487 31.36 35.83 13.724
MCD-estimated:
MDC-0.975-Mean: 14.85 13.0071 30.2024 34.4786 13.1738
MDC-0.750-Mean: 15.1302 13.1581 30.6895 35.0314 13.4081
MDC-0.500-Mean: 14.85 13.0071 30.2024 34.4786 13.1738
Measures:
Mah.Dist: 3.4381
Mah.Dist-MCD-0.975: 3.3701
Mah.Dist-MCD-0.750: 3.3337
Mah.Dist-MCD-0.500: 3.4178
Zuletzt geändert am 17.02.2013
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