The following study was carried out by the Department of Mining at the Virginia
ID: 934323 • Letter: T
Question
The following study was carried out by the Department of Mining at the Virginia Polytechnic Institute and State University in 1979. In this study of a particular filtering system for coal, a coagulant was added to a solution in a tank containing coal and sludge, which was then placed in a recirculation system in order that the coal could be washed. Three factors were varied in the experimental process.
Factor A: percent solids circulated initially in the overflow
Factor B: flow rate of the polymer
Factor C: pH of the tank
The amount of solids in the underflow of the cleansing system determine how clean the coal has become. Two levels of each factor were used and two experimental runs were made for each of the treatment combinations. The responses, percent solids by weight, in the underflow of the circulation system are as follows:
The following study was carried out by the Department of Mining at the Virginia Polytechnic Institute and State University in 1979. In this study of a particular filtering system for coal, a coagulant was added to a solution in a tank containing coal and sludge, which was then placed in a recirculation system in order that the coal could be washed. Three factors were varied in the experimental process. Factor A: percent solids circulated initially in the overflow Factor B: flow rate of the polymer Factor C: pH of the tank The amount of solids in the underflow of the cleansing system determine how clean the coal has become. Two levels of each factor were used and two experimental runs were made for each of the treatment combinations. The responses, percent solids by weight, in the underflow of the circulation system are as follows: Assuming that all interactions are potentially important, do a complete analysis of the data.Explanation / Answer
I guess the most important has percent solids circulated initially in the overflow, because not only has the highest minimum error data but the variation, as this more accurate in any case whether to interact at least two variables, of convenience is percent solids circulated initially in the overflow with flow rate of the polymer, but to have a better control the interaction between the three, because it is similar to previous interaction but has a smaller margin of error.
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