In the hypothesis testing approach of Jerzy Neyman and Egon Pearson, a null hypothesis is contrasted with an alternative hypothesis, and the two hypotheses are distinguished on the basis of data, with certain error rates. Proponents of each approach criticize the other approach.
In geography, relief refers to the highest and lowest elevation points in an area. Mountains and ridges are typically the highest elevation points, while valleys and other low-lying areas are the lowest. Relief is essential to understanding the topography of an area.
Updated December 04, 2014. Definition: The difference between the highest and lowest elevations in an area. A relief map shows the topography of the area. Examples: The local relief within Yosemite National Park is impressive - there are mountains and valleys throughout the area. 1  Darn You, Gophers! 2  Gorgeous and Giant: Get to Know the Rocky Mountains. 3  Sweet Relief! 4  Yellowstone National Park Geography and Overview. 5  The Study of Basin and Range Topography.