The study relating brain weight (grams) and head size (cubic cm) yielded an R-squared of 0.6393. Which of the following is a correct interpretation of the R-squared?

8.

Question 8

The study relating brain weight (grams) and head size (cubic cm) yielded an R-squared of 0.6393. Which of the following is a correct interpretation of the R-squared?

1 / 1 point

63.93% of the variation in brain weight can be accounted for by the linear relationship with head size.

We would expect brain weight to increase by 0.6393 grams for every additional cubic cm in head size, on average.

We would expect head size to increase by 0.6393 cubic cm for every additional gram in brain weight, on average.