dataset = Spartina
begin description
The purpose of this study was to identify the
important soil characteristics influencing aerial biomass production of the
marsh grass Spartina alterniflora in the Cape Fear Estuary of North Carolina.
There are 3 locations (1 = OI = Oak Island, 2 = SI = Smith Island, 
3 = SM = Snow's Marsh) and three types of vegetation (1 = Dveg = revegetated, 
2 = short, and 3 = tall).
end description
begin variables
Col 0 = Biomass = Aerial biomass, g^{-2}
Col 1 = K = Potassium, ppm
Col 2 = Location = 1=OI, 2=SI, 3=SM
Col 3 = Na = Sodium, ppm
Col 4 = pH = acidity
Col 5 = Salinity
Col 6 = Type = 1=Dveg, 2=Short, 3=Tall
Col 7 = Zn = Zinc, ppm
Col 8 = Case labels = A combination of Type and Location
end variables
begin data
(
676 1441.67 1 35184.5 5 33 1 16.4524 "OI-Dveg" 
516 1299.19 1 28170.4 4.75 35 1 13.9852 "OI-Dveg" 
1052 1154.27 1 26455 4.2 32 1 15.3276 "OI-Dveg" 
868 1045.15 1 25072.9 4.4 30 1 17.3128 "OI-Dveg" 
1008 521.62 1 31664.2 5.55 33 1 22.3312 "OI-Dveg" 
436 1273.02 1 25491.7 5.05 33 2 12.2778 "OI-Short" 
544 1346.35 1 20877.3 4.25 36 2 17.8225 "OI-Short" 
680 1253.88 1 25621.3 4.45 30 2 14.3516 "OI-Short" 
640 1242.65 1 27587.3 4.75 38 2 13.6826 "OI-Short" 
492 1282.95 1 26511.7 4.6 30 2 11.7566 "OI-Short" 
984 553.69 1 7886.5 4.1 30 3 9.882 "OI-Tall" 
1400 494.74 1 14596 3.45 37 3 16.6752 "OI-Tall" 
1276 526.97 1 9826.8 3.45 33 3 12.373 "OI-Tall" 
1736 571.14 1 11978.4 4.1 36 3 9.4058 "OI-Tall" 
1004 408.64 1 10368.6 3.5 30 3 14.9302 "OI-Tall" 
396 646.65 2 17307.4 3.25 30 1 31.2865 "SI-Dveg" 
352 514.03 2 12822 3.35 27 1 30.1652 "SI-Dveg" 
328 350.73 2 8582.6 3.2 29 1 28.5901 "SI-Dveg" 
392 496.29 2 12369.5 3.35 34 1 19.8795 "SI-Dveg" 
236 580.92 2 14731.9 3.3 36 1 18.5056 "SI-Dveg" 
392 535.82 2 15060.6 3.25 30 2 22.1344 "SI-Short" 
268 490.34 2 11056.3 3.25 28 2 28.6101 "SI-Short" 
252 552.39 2 8118.9 3.2 31 2 23.1908 "SI-Short" 
236 661.32 2 13009.5 3.2 31 2 24.6917 "SI-Short" 
340 672.15 2 15003.7 3.35 35 2 22.6758 "SI-Short" 
2436 525.65 2 10225 7.1 29 3 0.3729 "SI-Tall" 
2216 563.13 2 8024.2 7.35 35 3 0.2703 "SI-Tall" 
2096 497.96 2 10393 7.45 35 3 0.3205 "SI-Tall" 
1660 458.38 2 8711.6 7.45 30 3 0.2648 "SI-Tall" 
2272 498.25 2 10239.6 7.4 30 3 0.2105 "SI-Tall" 
824 936.26 3 20436 4.85 26 1 18.9875 "SM-Dveg" 
1196 894.79 3 12519.9 4.6 29 1 20.9687 "SM-Dveg" 
1960 941.36 3 18979 5.2 25 1 23.9841 "SM-Dveg" 
2080 1038.79 3 22986.1 4.75 26 1 19.9727 "SM-Dveg" 
1764 898.05 3 11704.5 5.2 26 1 21.3864 "SM-Dveg" 
412 989.87 3 17721 4.55 25 2 23.7063 "SM-Short" 
416 951.28 3 16485.2 3.95 26 2 30.5589 "SM-Short" 
504 939.83 3 17101.3 3.7 26 2 26.8415 "SM-Short" 
492 925.42 3 17849 3.75 27 2 27.7292 "SM-Short" 
636 954.11 3 16949.6 4.15 27 2 21.5699 "SM-Short" 
1756 720.72 3 11344.6 5.6 24 3 19.6531 "SM-Tall" 
1232 782.09 3 14752.4 5.35 27 3 20.3295 "SM-Tall" 
1400 773.3 3 13649.8 5.5 26 3 19.588 "SM-Tall" 
1620 829.26 3 14533 5.5 28 3 20.1328 "SM-Tall" 
1560 856.96 3 16892.2 5.4 28 3 19.242 "SM-Tall" 
)