Mean: To find mean you do the same as you would to find an average. Add up all of the numbers and divide by how many numbers are there. So, 8.3 + 4.5 + 6.2 + 9.6 + 4.3 + 11.2 + 5.9 + 9.7 + 10.5 = 70.2 Then divide by 9 since you have 9 numbers. 70.2 / 9 = 7.8
Median: To find median you set up the data from least to greatest and cross out one number from each side until you are left with one number as the middle number. 4.3, 4.5, 5.9, 6.2, 8.3, 9.6, 9.7, 10.5, 11.2 4.5, 5.9, 6.2, 8.3, 9.6, 9.7, 10.5 5.9, 6.2, 8.3, 9.6, 9.7 6.2, 8.3, 9.6 = 8.3 Mode: Mode is the most, meaning the number that appears the most in your set of data. In this case there is no mode because in your set there is no number that occurs more than once.
Angles are named in two ways. You can name a specific angle by using the vertex point, and a point on each of the angle's rays. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle. You can also name angles by looking at their size.
