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2-2 Relating graphs to events

2-2 Relating graphs to events. MISS BATTAGLIA – ALGEBRA 1 CP OBJECTIVE: INTERPRET AND SKETCH GRAPHS FROM STORIES; CLASSIFYING DATA AS DISCRETE OR CONTINUOUS. Warm up. Would you expect a positive correlation, negative correlation, or no correlation?

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2-2 Relating graphs to events

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  1. 2-2 Relating graphs to events MISS BATTAGLIA – ALGEBRA 1 CP OBJECTIVE: INTERPRET AND SKETCH GRAPHS FROM STORIES; CLASSIFYING DATA AS DISCRETE OR CONTINUOUS

  2. Warm up • Would you expect a positive correlation, negative correlation, or no correlation? • Amount of Free Time vs. Number of Classes Taken • Snow Shovel Sales vs. Amount of Snowfall • Number of Calories Burned vs. Time Exercising

  3. transportation • A commute home from school • combines walking with taking the • subway. The graph describes the • trip by relating the variables time • and total distance. Describe what • the graph shows. • Explain why the section of the graph showing the person waiting for the subway is flat. • Why is the subway section steeper than the walking sections?

  4. BIKE RIDE… • A friend mistakenly states that this graph describes a person bicycling up and then down a hill. What would you say to this friend to help clear up the misconception?

  5. travel • The Shermans are visiting friends several miles from home. On the way, they stop to buy juice. After a few hours, they return home. Sketch a graph to describe the trip. Label the sections.

  6. example • Sketch a graph to describe your height from the ground on a roller coaster ride. Explain the activity in each section of the graph. Be creative!

  7. Classifying data • Continuous data usually involve a measurement, such as temperature, length, or weight. • (In a graph, there are no spaces between points) • Discrete data involve a count, such as a number of people or objects. • (In a graph, there are spaces between points) • Continuous DataDiscrete Data

  8. example • Classify the data as continuous or discrete. Explain your reasoning and sketch the graph of each situation. • a) Height of a plant for five days b) class attendance for 5 days

  9. classwork • Create a story for the graph given to your group.

  10. homework • Pg 61-62 #2–8 even , 9a, 12–16 even

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