The following data on x=soil depth and y=percentage of montmorillonite in the soil were analyzed from samples taken in Belize X 40 50 60 70 80 90 100 Y 58 34 32 30 28 27 22 Draw the scatterplot...

The following data on x=soil depth and y=percentage of montmorillonite in the soil were analyzed from samples taken in Belize

X             40           50           60           70           80           90           100

Y              58           34           32           30           28           27           22

Draw the scatterplot

Compute and draw the least square regression line.

Compute the residual and construct a residual plot.  Are there any unusual features of this plot?