The sample correlation coefficient between years and rbisyr is about 0.487. Does this make sense? What is the variance inflation factor (there is only one) for the slope coefficients in the multiple regression? Would you say there is little, moderate, or strong collinearity between years and rbisyr

This depends on the correlation method you are using.

Explanation:You're probably not using Pearson's correlation since VIF is calculated from R2, which is basically Pearson's squared correlation. You may be using Spearman or another type of mapping.

answer; i believe the correct answer is (general);