The statistical mean can also be used to interpret statistical data. Some important properties make statistical mean very useful for measuring central tendency. Since Xi - X is the distance from a given number to the average. The numbers to the left of the mean are balanced by the numbers to the right of the mean.
Show the angles below using two pencils. Try to âseeâ the circle that is traced out in the air. This is a 1-degree angle! an obtuse angle; 127Â°. a right angle; 90Â°. How to measure an angle with a protractor 1  : Place the midpoint of the protractor on the VERTEX of the angle. 2  Line up one side of the angle with the zero line of the protractor (where you see the number 0). 3  Read the degrees where the other side crosses the number scale.
Many people think that an angle is some kind of. slanted line. But in geometry an angle is made up of two rays that. have the same beginning point. That point is called the vertex and the two rays are called the sides. of the angle. To name an angle, we use three points, listing the vertex in the middle. This is angle DEF or â DEF. We can use the symbol â  for angle. 1. Write if each figure is a line, ray, line segment, or an angle, and name it.