Specific Number of Options Definition The Statistical Questions must contain a specific topic. For instance the question must contain a focus. *Number of pets people who live in your neighborhood have, etc. Statistical Questions must also have a specific population.
A reflection is a flip of an object over a line. Let's look at two very common reflections: a horizontal reflection and a vertical reflection. Notice the colored vertices for each of the triangles. The line of reflection is equidistant from both red points, blue points, and green points.
The law of reflection says that for specular reflection the angle at which the wave is incident on the surface equals the angle at which it is reflected. Mirrors exhibit specular reflection. In acoustics, reflection causes echoes and is used in sonar. In geology, it is important in the study of seismic waves.