Referring to the previous exercise, what can you say about cause and effect and generalization based on the gator data?

Data from previous exercise

As we hope you agree, there seem to be two kinds of lakes. Two (Pierce and Seminole) have small harvests that don€™t show a time trend. Th e other three lakes have much bigger harvests that increase steeply (and similarly) over time. Use the Multiple Proportions applet to compare the two groups over time and to test the strength of evidence that the two groups differ.

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Year Lake Group 2010 TOTAL 2005 2000 28 32 Pierce and Seminole 33 93 The other three 637 97 353 187 125 220 385 TOTAL 730