For these data, it is useful to draw separate plots of Length versus Height for each architectural style. Summarize the differences apparent in the graphs in the regressions of Length on Height for...

For these data, it is useful to draw separate plots of Length versus Height for each architectural style. Summarize the differences apparent in the graphs in the regressions of Length on Height for the two styles. Include in your graph the fitted simple and quadratic regressions.

Use the data to obtain tests that verify the visual results from the graphs.