In 2014, Barcenas et al. sampled 40 juvenile octopi and measure their weight (grams)

and age (days). The results of their regression analysis are given below.

• Comment on the relationship shown by the scatterplot.
• Give the simple linear regression equation using weight to predict age.
• What change in age is associated with an increase in weight of 1 gram?
• What percent of the variation in age is explained by the linear relationship with weight?