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Mathematics 8 Online
OpenStudy (xximhisgirlxx):

Help please, will give medal!

OpenStudy (xximhisgirlxx):

When water flows across farmland, some of the soil is washed away, resulting in erosion. Researchers released water across a test bed at different flow rates and measured the amount of soil washed away. The following table gives the flow (in liters per second) and the weight (in kilograms) of eroded soil: (a) Is the association positive or negative? (b) Estimate the correlation r. (c) Explain why your r is reasonable based on the scatterplot.

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