Datafile Name: Auto Pollution Filter Noise
Datafile Subjects:
Automotive
,
Consumer
,
Energy
,
Engineering
,
Environment
Story Names: Auto Pollution Filter Noise
Reference: A.Y. Lewin and M.F. Shakun, Policy Sciences: Methodology and Cases, Pergammon
Press, 1976, p 313.
Authorization: free use
Description:
The data are from a statement by Texaco, Inc. to the Air and Water Pollution
Subcommittee of the Senate Public Works Committee on June 26, 1973.
Mr. John McKinley, President of Texaco, cited an automobile filter developed
by Associated Octel Company as effective in reducing pollution. However,
questions had been raised about the effects of filters on vehicle performance,
fuel consumption, exhaust gas back pressure, and silencing. On the last
question, he referred to the data included here as evidence that the silencing
properties of the Octel filter were at least equal to those of standard silencers.
Number of cases: 36
Variable Names:
- NOISE = Noise level reading (decibels)
- SIZE = Vehicle size: 1 small 2 medium 3 large
- TYPE = 1 standard silencer 2 Octel filter
- SIDE = 1 right side 2 left side of car
The Data:
NOISE SIZE TYPE SIDE
810 1 1 1
820 1 1 1
820 1 1 1
840 2 1 1
840 2 1 1
845 2 1 1
785 3 1 1
790 3 1 1
785 3 1 1
835 1 1 2
835 1 1 2
835 1 1 2
845 2 1 2
855 2 1 2
850 2 1 2
760 3 1 2
760 3 1 2
770 3 1 2
820 1 2 1
820 1 2 1
820 1 2 1
820 2 2 1
820 2 2 1
825 2 2 1
775 3 2 1
775 3 2 1
775 3 2 1
825 1 2 2
825 1 2 2
825 1 2 2
815 2 2 2
825 2 2 2
825 2 2 2
770 3 2 2
760 3 2 2
765 3 2 2
