For questions $1-2$:

A set of X$-$Y data pairs are in the file HW$\_$LR$\_591.$csv Download HW$\_$LR$\_591.$csv $.$

For questions $3-4$:

A set of X$-$Y data pairs are in the file HW$\_$LR$\_560.$csv Download HW$\_$LR$\_560.$csv $.$