Fitting Linear Models to Data · Exercise 30

Use each set of data to calculate the regression line using a calculator or other technology tool, and determine the correlation coefficient to 3 decimal places of accuracy.

$$\begin{array}{ccccccc}x& \text{100}& \text{80}& \text{60}& \text{55}& \text{40}& \text{20}\\ y& \text{2000}& \text{1798}& \text{1589}& \text{1580}& \text{1390}& \text{1202}\end{array}$$

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Precalculus 2e · §2.4 Fitting Linear Models to Data · Exercise 30