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Tips (D vs N) data
The data set (and description) can be downloaded here:
http://stat.ethz.ch/Teaching/Datasets/tips.dat
Description:
Data from Di Cook's "Xgobi Book" page
http://www.public.iastate.edu/~dicook/xgobi-book/
In one restaurant, a foodserver recorded the following data on all
customers he had served during an interval of two and a half months in
early 1990. The restaurant, located in a suburban shopping mall, was
one of a national chain and served a varied menu.
TOTBILL Total bill, including tax, in dollars
TIP Tip in dollars
SEX Sex of person paying the bill (0=male, 1=female)
SMOKER Smoker in the party? (0=no, 1=yes)
DAY 3=Thursday, 4=Friday, 5=Saturday, 6=Sunday
TIME 0=day, 1=night
SIZE Size of the party
Descriptive statistics:
Dataset= tips_DvsN : n= 244 , d= 6
Class1: n= 176
Covariance matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 83.5767 8.3097 -0.4707 0.4249 0.3669 4.6352
[2,] 8.3097 2.0628 -0.0299 -0.0147 0.0785 0.5602
[3,] -0.4707 -0.0299 0.2094 0.0132 -0.0418 -0.0503
[4,] 0.4249 -0.0147 0.0132 0.2409 -0.0838 -0.0637
[5,] 0.3669 0.0785 -0.0418 -0.0838 0.4009 0.1308
[6,] 4.6352 0.5602 -0.0503 -0.0637 0.1308 0.8285
Correlation matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 1.0000 0.6329 -0.1125 0.0947 0.0634 0.5570
[2,] 0.6329 1.0000 -0.0455 -0.0208 0.0864 0.4285
[3,] -0.1125 -0.0455 1.0000 0.0590 -0.1443 -0.1207
[4,] 0.0947 -0.0208 0.0590 1.0000 -0.2695 -0.1426
[5,] 0.0634 0.0864 -0.1443 -0.2695 1.0000 0.2270
[6,] 0.5570 0.4285 -0.1207 -0.1426 0.2270 1.0000
Median: 18.8347 2.9694 0.2811 0.3067 5.3465 2.5333
Mean: 20.7972 3.1027 0.2955 0.3977 5.3523 2.6307
MCD-estimated:
MDC-0.975-Mean: 21.8872 3.2203 0 0.2586 6 2.8103
MDC-0.750-Mean: 21.8872 3.2203 0 0.2586 6 2.8103
MDC-0.500-Mean: 21.8872 3.2203 0 0.2586 6 2.8103
Class2: n= 68
Covariance matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 59.5040 7.4887 -0.4333 0.0791 -0.4517 5.6853
[2,] 7.4887 1.4529 -0.0759 0.0365 -0.0361 0.8121
[3,] -0.4333 -0.0759 0.2535 -0.0274 0.0059 0.0237
[4,] 0.0791 0.0365 -0.0274 0.2272 0.0542 -0.0667
[5,] -0.4517 -0.0361 0.0059 0.0542 0.0937 -0.0430
[6,] 5.6853 0.8121 0.0237 -0.0667 -0.0430 1.0817
Correlation matrix:
[,1] [,2] [,3] [,4] [,5] [,6]
[1,] 1.0000 0.8054 -0.1116 0.0215 -0.1913 0.7087
[2,] 0.8054 1.0000 -0.1250 0.0635 -0.0977 0.6479
[3,] -0.1116 -0.1250 1.0000 -0.1143 0.0384 0.0453
[4,] 0.0215 0.0635 -0.1143 1.0000 0.3715 -0.1346
[5,] -0.1913 -0.0977 0.0384 0.3715 1.0000 -0.1351
[6,] 0.7087 0.6479 0.0453 -0.1346 -0.1351 1.0000
Median: 15.3934 2.442 0.5175 0.3778 3.1178 2.1454
Mean: 17.1687 2.7281 0.5147 0.3382 3.1029 2.4118
MCD-estimated:
MDC-0.975-Mean: 17.0509 2.6738 0.5556 0 3.0222 2.5111
MDC-0.750-Mean: 17.0509 2.6738 0.5556 0 3.0222 2.5111
MDC-0.500-Mean: 17.0509 2.6738 0.5556 0 3.0222 2.5111
Measures:
Mah.Dist: 4.1285
Mah.Dist-MCD-0.975: 27.3108
Mah.Dist-MCD-0.750: 27.3108
Mah.Dist-MCD-0.500: 27.3108
Zuletzt geändert am 17.02.2013
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