Advanced Placement (AP), 18.10.2021 18:50 4804344130

Suppose a researcher collects data on the bacterial contamination, measured in colony-forming units per milliliter, for both upstream and downstream sections of 35 rivers. The data is plotted with upstream bacterial contamination on the horizontal axis and downstream bacterial contamination on the vertical axis. The Scioto River is an outlier in the ‑direction. What must be true about this river? Select all true statements.

The absolute value of the residual of this river is large.

The downstream bacterial contamination for this river is much higher or much lower than the rest of the rivers in the data set.

The downstream bacterial contamination for this river is much higher or lower than other rivers in the data set that have similar upstream bacterial contamination.

The upstream bacterial contamination for this river is much higher or lower than the rest of the rivers in the data set.

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Suppose a researcher collects data on the bacterial contamination, measured in colony-forming units...

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