Required information A study was undertaken to determine if water in an area nea

Question

Required information A study was undertaken to determine if water in an area near a landfill contained pharmaceutical wastes. The ground water levels of the area were tested and the results compiled in the table shown below. The "Toxicity Threshold Level" column is the amount of a chemical that would produce adverse health effects. The "Levels Found column indicates the amount of each chemical sampled in the ground water. Chemical Toxicity threshold Levels found (mg/L) 4.2 2.8 18.3 1.2 0.1 name levels (mg/L) Arsenic Barium Chloroform Lindane Mercury 5.0 100.0 6.0 0.4 0.2 Which graph would you use to best represent the data in the table?

Explanation / Answer

Which graph would you use to best represent the data in the table?

Figure 1

Graphs in figure 1 and figure 3 both represent clear data structure. But I would like to go with figure 1 because it clearly indicates toxicity threshold level and which chemical cross the threshold level.

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