Example :A study is conducted to measure the monthly soil erosion (see Chapter 9 for a detailed discussion on this topic) from a research plot. The plot is located in the Midwest region of the U.S., no tillage is used, and the plot is planted with corn at the end of April. In addition to measuring actual soil losses from the plot, two predictive methods are used to estimate the monthly soil erosion. The measured and predicted data are presented in Table 1.8. Does the measured data seem intuitively correct, and which predictive method is best?