Case Study 6.3: A Device to Reduce Engine Emissions
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Variables:
HC Hydrocarbon (ppm)
CO Carbon Monoxide (pct of Volume)
CO2 Carbon Dioxide (pct of Volume)
DAY Test Day: 1,2,...,13
REP Replicate: 1,2,3,4
DEV Device: 1 = Present, 0 = Absent
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c63.dat:
day rep dev hc co2 co
1 1 0 8.24 14.40 0.23
1 2 0 20.20 16.27 0.32
1 3 0 12.48 17.11 0.12
1 4 0 20.27 15.53 0.32
2 1 0 7.73 14.52 0.06
2 2 0 13.10 16.45 0.05
2 3 0 12.13 12.84 0.20
2 4 0 10.03 13.84 0.12
3 1 1 4.83 15.29 0.11
3 2 1 4.33 13.46 0.16
3 3 1 7.18 14.10 0.14
3 4 1 5.51 16.55 0.05
4 1 1 3.43 14.05 0.07
4 2 1 9.16 13.84 0.23
4 3 1 4.50 14.10 0.16
4 4 1 7.06 11.92 0.17
5 1 1 10.80 13.67 0.07
5 2 1 10.23 14.80 0.09
5 3 1 7.86 13.64 0.16
5 4 1 5.73 16.38 0.00
6 1 1 17.32 14.18 0.24
6 2 1 23.08 14.23 0.01
6 3 1 7.33 11.14 0.08
6 4 1 5.00 13.96 0.20
7 1 1 21.51 13.89 0.25
7 2 1 24.70 14.42 0.16
7 3 1 29.44 13.11 0.27
7 4 1 27.91 13.59 0.17
8 1 1 7.84 16.13 0.23
8 2 1 4.72 16.32 0.10
8 3 1 2.27 15.84 0.20
8 4 1 2.98 15.52 0.30
9 1 1 18.40 15.39 0.08
9 2 1 13.91 15.55 0.02
9 3 1 13.07 15.84 0.19
9 4 1 7.35 15.34 0.11
10 1 1 0.90 16.38 0.06
10 2 1 2.66 15.28 0.10
10 3 1 0.71 14.69 0.13
10 4 1 0.17 15.31 0.16
11 1 1 15.74 16.46 0.21
11 2 1 9.62 14.79 0.14
11 3 1 13.87 14.71 0.07
11 4 1 11.62 13.47 0.13
12 1 0 18.08 15.28 0.30
12 2 0 11.16 15.07 0.11
12 3 0 10.76 16.90 0.01
12 4 0 5.22 15.19 0.11
13 1 0 13.63 14.98 0.21
13 2 0 14.00 14.21 0.21
13 3 0 14.04 14.14 0.06
13 4 0 12.50 13.62 0.14