1. Course 2, Lesson 1-1 Find the mean, median, and mode for each data set. Round to the nearest tenth if necessary. 1. number of cars in household: 1, 3, 2, 0, 2, 1, 6, 3, 2, 2, 0, 1 2. Time (minutes) spent exercising: 60, 30, 45, 60, 45, 50, 20, 0, 60, 30 3. The mean of a set of 12 numbers is 14.8. What is the sum of the numbers? 4. Which measure best represents the following data set? 39, 43, 45, 46, 41, 40, 44, 47, 42

2. Course 2, Lesson 1-1 ANSWERS 1. 1.9; 2; 2 2. 40; 45; 60 3. 177.6 4. Mean

3. HOW can you show that two objects are proportional? Ratios and Proportional Relationships Course 2, Lesson 1-1

4. Ratios and Proportional Relationships Course 2, Lesson 1-1 Common Core State Standards © Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved. 7.RP.2 Recognize and represent proportional relationships between quantities. 7.RP.2b Identify the constant of proportionality (unit rate) in tables, graphs, equations, diagrams, and verbal descriptions of proportional relationships. Mathematical Practices 1Make sense of problems and persevere in solving them. 3 Construct viable arguments and critique the reasoning of others 4 Model with mathematics. 5 Use appropriate tools strategically.

5. To find a unit rate To determine the lowest price Ratios and Proportional Relationships Course 2, Lesson 1-1

6. Ratios and Proportional Relationships Course 2, Lesson 1-1 rate unit rate

7. How did what you learned today help you answer the HOW can you show that two objects are proportional? Course 2, Lesson 1-1 Ratios and Proportional Relationships

8. How did what you learned today help you answer the HOW can you show that two objects are proportional? Course 2, Lesson 1-1 Ratios and Proportional Relationships Sample answers: By writing a rate as a unit rate

9. Explain how to find a unit rate. Ratios and Proportional Relationships Course 2, Lesson 1-1