1. Bellringer – Find IV for each 1. 2. A scientist studied the relationship between hearing loss and hours spent listening to music. 3.Procedure 1.Pour 3 mL of yeast mixture into each test tube 2.Weigh out 1 gram of sugar and 2 grams of sugar 3.Pour the 1 gram of sugar into test tube 2 and the 2 grams of sugar into test tube 3. No sugar goes into test tube 1. 4.Add 7 mL of water to each tube and shake 5.Measure the height of gas bubbles that form.

3. Things to do in a scatter plot Determine which is IV and label x-axis (then DV goes on y-axis) Decide if you need a squiggly (is your first value far from 0?) Put tick marks at each line

4. Decide what to count by 1.Determine the range: high – low 719 – 447 = 272 2.Determine the number of spaces We used 1 for the squiggly so there are 9 left 3.Divide 272 divided by 9 = 30+ so 30 won’t fit 4.Choose the next nice round number to make it easy to graph 5.Be sure to start with a number below your first value

5. Try it for y-axis Range: 50 – 13 = 37 37 divided by 9 = 4+ so can’t use 4 So go up to 5

6. Plotting points accurately!

8. Draw best fit line Do not try to include 0!!! Line should cut data in half