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.
43 Holt Geometry All rights reserved. Name Date Class LESSON Practice A1-6 Midpoint and Distance in the Coordinate Plane Complete the statements. 1. A coordinate plane is a plane that is divided into four regions by a horizontal number line, the x-axis, and a vertical number line, the y-axis. 2. The location, or coordinates, of a point are given by an ordered pair (x, y). Use the figure for Exercises 3â5.