Gizmos Name: Date: Student Exploration: Describing Data Using Statistics : line plot, mean, median, mode, outlier, range Prior Knowledge Questions (Do these BEFORE using the Gizmo.) Chuck, Molly, Katya, and Russell all work as lifeguards during the summer. They each make $5 per hour. The - - to the right shows how much each makes in a week. 1. Who makes the most money? Who makes the least? 2. What is the difference between the greatest amount of money and the least? Gizmo Wann-up Data sets can often be large and messy, with too many items to list individually. Statisticians often summarize data sets by describing where the numbers are centered. and how spread out they are. You can learn about three measures of center and one measure of spread in the Describing Data Using Statistics Gizmo. To begin, model the situation described above b dragging two dots to 40, one dot to 60. and one dot to 80. You will first investigate the -V a measure of the spread of the data. 1. The range of a data set is the difference between the highest and lowest values in the data set. To nd the range, subtract the lowest value from the highest. What is the range of this data set? To check, select Range on the Gizmo. 2. Move the dot on 60 around between 40 and 80. Does this affect the range? 3. Move the other dots. Try to increase and decrease the range. A. How can you increase the range? B. How can you decrease the range? C. In general, when does a change in the data affect the range? Reproduction for educational use only: Public sharing or posting is prohibited. [Q 2019 ExploreLearning'f All rights reserved