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.
Mountain Climber. The mountain climber is a dynamic exercise that increases core strength and stability through repeated lower body motion while the upper body works to stabilize the rest of the body. The movement may also be used for improving cardiovascular endurance.