Question

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?

Answer 1

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.