Question 1: In a physics experiment, various masses were suspended from a spring. The stretching distance of the spring is recorded for each case. Mass (g) 50 100 150 200 300 500 750 Stretch Distance (cm) 1.2 2.5 3.2 5.3 7 11 16 a) Calculate the correlation coefficient and classify the linear correlation. Show all calculations. b) Calculate the line of best fit. Show all calculations. c) Predict the stretch length of this spring when loaded with a 625 g mass