In hilly areas farmers often contour their fields to reduce the erosion due to water flow. This might have the unintended effect of changing the yield since the rows may not be aligned in an east-west direction to take advantage of direct sunlight. The following summary statistics show the yields in hundreds of bushels per acre of randomly selected plots of land along hillsides as well as level plots of land nearby with similar soil characteristics. Quantiles

10.9	10.9	13.3	29.2	58.1	97.4	100%
10.9	11.2	18.5	39.3	61.5	103.4	118

Means and Standard Deviations

12	39.7	30.4	8.8
12	44.6	31.1	9.0

a) Describe and compare the distributions.

b) Based on your plots, what can you conclude about the types of land.