I have chosen the meteorites dataset from The Meteorite Society, hosted at http://visualizing.org/datasets/meteorite-landings .

It has a couple interesting things going for it.

- It's only about 3.1MB, not very big, but not to small in size.
- It's got a lot of different data-types, with intersting relationships to play with (variable-types)
  - Ratio (Mass, year)
  - Qualitative - Interval (lat, long)
  - Catagorical non-ordinal (class/type, namtype)
- It's already clean

Here are a few example rows:

name,nametype,recclass,mass,fall,year,id,reclat,reclong
Aachen,Valid,L5,21,Fell,1880,1,50.775000,6.083330
Aarhus,Valid,H6,720,Fell,1951,2,56.183330,10.233330
Abee,Valid,EH4,107000,Fell,1952,6,54.216670,-113.000000
Acapulco,Valid,Acapulcoite,1914,Fell,1976,10,16.883330,-99.900000
Achiras,Valid,L6,780,Fell,1902,370,-33.166670,-64.950000
Adhi Kot,Valid,EH4,4239,Fell,1919,379,32.100000,71.800000
Adzhi-Bogdo (stone),Valid,LL3-6,910,Fell,1949,390,44.833330,95.166670
Agen,Valid,H5,30000,Fell,1814,392,44.216670,0.616670
Aguada,Valid,L6,1620,Fell,1930,398,-31.600000,-65.233330
Aguila Blanca,Valid,L,1440,Fell,1920,417,-30.866670,-64.550000
Aioun el Atrouss,Valid,Diogenite-pm,1000,Fell,1974,423,16.398060,-9.570280
Aïr,Valid,L6,24000,Fell,1925,424,19.083330,8.383330
Aire-sur-la-Lys,Valid,Unknown,,Fell,1769,425,50.666670,2.333330
Akaba,Valid,L6,779,Fell,1949,426,29.516670,35.050000



