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DO NOW – What are the 5 unbreakable rules of graph drawing?

DO NOW – What are the 5 unbreakable rules of graph drawing?. 2. Use a ruler to draw straight lines. 3. Label your axes. 4. Each axis can have a separate scale, but there must be a consistent scale along the axis!. Pencil only!. 5. Use a title that tells what the graph is showing.

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DO NOW – What are the 5 unbreakable rules of graph drawing?

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  1. DO NOW – What are the 5 unbreakable rules of graph drawing? 2. Use a ruler to draw straight lines. 3. Label your axes. 4. Each axis can have a separate scale, but there must be a consistent scale along the axis! Pencil only! 5. Use a title that tells what the graph is showing

  2. The Lynx and Hare Graph

  3. How to Graph Your Data: Turn your paper landscape and use a ruler to draw an “X” axis. Draw TWO “Y” axes on your graph paper because you will need to graph the population of both the lynx and the hare. Leave space for a title Leave space for a margin Leave space for a margin Leave space for a margin

  4. How to Graph Your Data: 3. Label the X axis “Generations.” Generations

  5. How to Graph Your Data: 4. Put a title on your Graph. Your title should give some information about what happened in the lab. An appropriate title might be “The Relationship Between Predator and Prey Populations.” “The Relationship Between Predator & Prey Populations” 0 1 2 3 4 5 6 7 8 9 10 Generations

  6. How to Graph Your Data: • 5. Determine how far apart you can scale the numbers on your X axis to include all of the generations you completed in your data table. If you only have 10 generations, then only graph 10 generations. If you have more generations, graph more. • It is VERY important that the intersecting line between the X and Y axis is “0” and the # spaces between each generation is IDENTICAL! • It is also VERY important that the X axis be as spread out as possible! “The Relationship Between Predator & Prey Populations” 0 1 2 3 4 5 6 7 8 9 10 Generations Start at “0”

  7. How to Graph Your Data: 6. On the left side of your paper, label your graph “Population of Hares”. “The Relationship Between Predator & Prey Populations” Population of Hares 0 1 2 3 4 5 6 7 8 9 10 Generations

  8. How to Graph Your Data: • 7. Put marks on each of the y axis intersections and count how many marks you have. This example has 15 • The # spaces between each generation must be IDENTICAL! • The Y axis must be as spread out as possible! “The Relationship Between Predator & Prey Populations” Population of Hares 0 1 2 3 4 5 6 7 8 9 10 Generations

  9. How to Graph Your Data: • 8. Determine the scale for your Y axis. • Find the LARGEST number of “Hares Remaining” • Divide by the number of marks on the Y axis. • Round UP to the nearest 10. That’s what you count each line by when you label your axis. • EXAMPLE: • If there are 714 hares remaining as the highest population and you have 15 marks on your graph, then divide 714 / 15= 47.6 • Round up to 50. • Label your graph by 50’s for each line – 0, 50, 100, 150, etc.

  10. How to Graph Your Data: 9.) Make sure you write the numbers on the lineand not between the lines. Complete all the way to 750 “The Relationship Between Predator & Prey Populations” 750 700 650 600 550 500 Population of Hares 450 400 350 300 250 200 150 100 50 0 1 2 3 4 5 6 7 8 9 10 Generations

  11. How to Graph Your Data: 9. Plot the hare population over however many generations you recorded. Connect the dots with a colored pencil.

  12. How to Graph Your Data: 10. Label the Y axis on the right side of the graph. This will be a DIFFERENT scale, for the lynxes. Population of Lynxes Generations

  13. How to Graph Your Data: 11. Put marks on the new “Y axis” intersections. This should be the same number of marks as it was for the “Population of Hares”. This example ALSO has 15 marks on this “Y axis”. “The Relationship Between Predator & Prey Populations” Population of Hares Population of Lynxes 0 1 2 3 4 5 6 7 8 9 10 Generations

  14. How to Graph Your Data: • 12. Determine the scale for this “Y axis” the same way you did for the Hares. • Find the LARGEST number of “Lynx Remaining” • Divide by the number of marks on the Y axis. • Round UP to the nearest 2. That’s what you count each line by when you label your axis. • Example: • If 28 is the highest hare population you had, and you have 15 marks, then divide 28/15=1.86. • Round up to 2. • Label your graph by 2’s – 0, 2, 4, 6, 8, 10, etc.

  15. How to Graph Your Data: 13. Plot the hare population over however many generations you recorded. Connect the dots with a different colored pencil! Population of Lynxes Generation

  16. How to Graph Your Data: 14.) Include a “key”. 15.) Write your name on this graph and staple it to your lab. Key Population of Lynxes Generation

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