A Researcher Wants to Determine Whether the Rate of Water

Multiple Choice

A researcher wants to determine whether the rate of water flow (in liters per second) over an experimental soil bed can be used to predict the amount of soil washed away (in kilograms) . The researcher measures the amount of soil washed away for various flow rates and, from these data, calculates the least-squares regression line to be amount of eroded soil = 0.4 + 1.3 × (flow rate)
What can be concluded about the correlation between amount of eroded soil and flow rate?

A) The correlation would be 1/1.3.
B) The correlation would be 1.3.
C) The correlation would be positive, but we cannot specify the exact value.
D) The correlation could be positive or negative.