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CrabsM (B vs O) 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= crabM_BvsO : n= 100 , d= 5
Class1: n= 50
Covariance matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 10.2560 6.5431 23.2955 26.6118 10.1705
[2,] 6.5431 4.4591 15.0789 17.2604 6.5481
[3,] 23.2955 15.0789 53.4167 60.9823 23.2389
[4,] 26.6118 17.2604 60.9823 69.7809 26.5889
[5,] 10.1705 6.5481 23.2389 26.5889 10.2393
Correlation matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 1.0000 0.9676 0.9953 0.9948 0.9925
[2,] 0.9676 1.0000 0.9770 0.9785 0.9691
[3,] 0.9953 0.9770 1.0000 0.9988 0.9937
[4,] 0.9948 0.9785 0.9988 1.0000 0.9947
[5,] 0.9925 0.9691 0.9937 0.9947 1.0000
Median: 15.0469 11.8321 32.49 37.1878 13.571
Mean: 14.842 11.718 32.014 36.81 13.35
MCD-estimated:
MDC-0.975-Mean: 14.4659 11.3439 31.0195 35.6024 12.8951
MDC-0.750-Mean: 14.4659 11.3439 31.0195 35.6024 12.8951
MDC-0.500-Mean: 14.4659 11.3439 31.0195 35.6024 12.8951
Class2: n= 50
Covariance matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 12.3550 7.5982 26.6189 29.3146 12.3245
[2,] 7.5982 4.8208 16.5342 18.2342 7.6471
[3,] 26.6189 16.5342 57.9305 63.7723 26.7634
[4,] 29.3146 18.2342 63.7723 70.3484 29.4883
[5,] 12.3245 7.6471 26.7634 29.4883 12.4410
Correlation matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 1.0000 0.9845 0.9950 0.9943 0.9941
[2,] 0.9845 1.0000 0.9894 0.9902 0.9874
[3,] 0.9950 0.9894 1.0000 0.9990 0.9969
[4,] 0.9943 0.9902 0.9990 1.0000 0.9968
[5,] 0.9941 0.9874 0.9969 0.9968 1.0000
Median: 16.4116 12.0831 33.0839 36.4237 15.0265
Mean: 16.626 12.262 33.688 37.188 15.324
MCD-estimated:
MDC-0.975-Mean: 16.6279 12.2465 33.6698 37.1907 15.3419
MDC-0.750-Mean: 16.569 12.2167 33.5929 37.0881 15.2786
MDC-0.500-Mean: 16.5682 12.2295 33.5682 37.0773 15.2909
Measures:
Mah.Dist: 6.0536
Mah.Dist-MCD-0.975: 5.1864
Mah.Dist-MCD-0.750: 5.1493
Mah.Dist-MCD-0.500: 5.2575
Zuletzt geändert am 17.02.2013
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