Name: Section: Practice Problems (Ungrouped) : Measures of Variability A high school teacher at a small private school assigns trigonometry practice problems to be worked via the net. Students must use a password to access the problems and the time of login and log-off are automatically recorded for the teacher. At the end of the week, the teacher examines the amount of time each student spent working the assigned problems. The data is provided below in minutes. 15 28 25 48 22 Task 1: Complete the following 43 49 34 22 33 table: 27 25 22 20 39 A X I v M Task 2: Find the: (Show Complete Solution) A. Range B. Standard Deviation C. Variance for the above data. Task 2: Answer: What does this information tell you about the variability of a student's length of time on the computer solving trigonometry problems? Is it homogeneous or heterogeneous? Practice Problems (Grouped) : Measures of Variability The number of mail orders received at the ofce of a mailing company are as follows: # of Order Task 1: Complete the following table: Task 2: Find the: (Show Complete Solution. Use the formula below) 2 i - f1! Varimcg 5-2 = 2 ' n 1 Standard Deviation, .9 = \"IEi A. Variance for the above data. B. Standard Deviation