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CrabsO (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= crabO_MvsF : n= 100 , d= 5
Class1: 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: 16.7525 12.34 33.9625 37.505 15.4675
MDC-0.750-Mean: 16.6854 12.2854 33.8122 37.3537 15.4244
MDC-0.500-Mean: 16.5682 12.2295 33.5682 37.0773 15.2909
Class2: n= 50
Covariance matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 8.8447 6.7255 17.1719 19.2543 8.0120
[2,] 6.7255 5.5150 13.3971 15.0458 6.2117
[3,] 17.1719 13.3971 34.0725 38.0765 15.9082
[4,] 19.2543 15.0458 38.0765 42.8007 17.7631
[5,] 8.0120 6.2117 15.9082 17.7631 7.5769
Correlation matrix:
[,1] [,2] [,3] [,4] [,5]
[1,] 1.0000 0.9630 0.9892 0.9896 0.9787
[2,] 0.9630 1.0000 0.9773 0.9793 0.9609
[3,] 0.9892 0.9773 1.0000 0.9971 0.9901
[4,] 0.9896 0.9793 0.9971 1.0000 0.9864
[5,] 0.9787 0.9609 0.9901 0.9864 1.0000
Median: 17.9134 14.8869 34.8019 39.4915 15.703
Mean: 17.594 14.836 34.618 39.036 15.632
MCD-estimated:
MDC-0.975-Mean: 17.6872 14.8487 34.7333 39.141 15.6795
MDC-0.750-Mean: 17.6872 14.8487 34.7333 39.141 15.6795
MDC-0.500-Mean: 17.6872 14.8487 34.7333 39.141 15.6795
Measures:
Mah.Dist: 4.2286
Mah.Dist-MCD-0.975: 5.5617
Mah.Dist-MCD-0.750: 5.4848
Mah.Dist-MCD-0.500: 5.4848
Zuletzt geändert am 17.02.2013
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