Lead and Zinc Concentrations in River Fish. Like to go fishing? In some areas, it may not be healthy to eat the fish you catch, due to the pollutants in the river that the fish ingest. Use the information in the table for Exercises 84–88. The table contains the lead and zinc concentrations in river fish from the Spokane River in Washington State, in parts per million.3

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Fish

1 0.73 45.3
2 1.14 50.8
3 0.60 40.2
4 1.59 64.0
5 4.34 150.0
6 1.98 106.0
7 3.12 90.8
8 1.80 58.8
9 0.65 35.4
10 0.56 28.4

Question 4.84

leadzincfish

84. Investigate the relationship.

  1. Construct a scatterplot of the variables. Make sure the variable goes on the y axis.
  2. What type of relationship do these variables have: positive, negative, or no apparent linear relationship?
  3. Will the correlation coefficient be positive, negative, or near zero?