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Looking at the gamma pdf curve(Figure 2B) we see that trace 1 which corresponds to an alum dosage of 50 mg/L has a really high turbidity rate of 1.171 NTU which is unusually higher than all the others, and demonstrates a smaller distribution. There seems to be varied ranges of mean turbidities depending on the alum dosage. Seems as though with higher dosages comes higher residual turbidities.
2A
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2B
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FIGURE 3A: The graph plots normalized turbidity vs. sedimentation velocity for each Alum dose ranging 10 mg/L~50 mg/L; FIGURE 3B: The graph plots the residual turbidity vs. sedimentation velocity for each Alum dose ranging 10 mg/L~50 mg/L
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