1. What is the response variable? morning high tide levels + 2. What is the regression line equation? (Round each value to the nearest hundredth, if necessary.) y = 3. We can expect the PM high tide on January 4 to be approximately feet. (Round to the nearest tenth, if necessary.) This is an example of interpolation + 4. The correlation coefficient is (round to the nearest hundredth) .This value means that there is moderate : no correlation between the AM and PM tide levels. 5. Change the regression model from linear to test and see if an exponential or a quadratic function is a better fit for this data set. It appears that the quadratic ÷ function is a better fit. 6. Use the new equation to estimate the value of the PM high time on January 4. The estimated PM high tide is (Round to the nearest tenth, if necessary.)
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