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1. The amount of water discharged by the Davao River has changed over time in roughly a straight-line pattern. A regression line for predicting water

1. The amount of water discharged by the Davao River has changed over time in roughly a straight-line pattern. A regression line for predicting water discharged (in cubic kilometers) during a given year is

predicted discharge =  -7792 +  (4.226 x year)


 How much (on average) does the volume of water increase with each passing year?



2. 

The number of faculty and the number of students are shown for a random selection of small colleges in Davao City. Is there a significant relationship between the two variables? Switch x and y and repeat the process. Which do you think is really the independent variable?

Faculty          99        110       113       116         138          174            220

Students     1353    1290   1091       1213       1384       1283          2075

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