Suppose a tax is added to each flight. dollars is added to every flight, no matter how long it is. the table shows the new data. what happens to the correlation coefficient when a constant is added to each number?
The correlation coefficient is unchanged. The attached graphs show how. On the left is the regression line for some made-up data. On the right is the regression line for data made by adding 3 to each of the first data points.
The correlation coefficient in both cases is 0.961.
