Graph

Rubber Bands: Length Average (inches)

 * 1) ===1: 15===
 * 2) ===2: 21===
 * 3) ===3: 26.33===
 * 4) ===4: 29.67===
 * 5) ===5: 36.67===
 * 6) ===6: 40.33===
 * 7) ===7: 46.67===
 * 8) ===8: 53.67===
 * 9) ===9: 60.33===
 * 10) ===10: 62.33===
 * 11) ===11: 66===
 * 12) ===12: 72.67===
 * 13) ===13: 77.67===

== Using the data collected from the jumps, we used the calculator to help us develop our model. The first thing we did was we made a list in our calculators, one for rubber bands and the other for the length of the jump in inches. We then put those lists into the regression line program. It then gave us the equation y= 10.19 + 5.23x. To make the graph, we used excel, and that gave us our final model. Our final model then helped us for the practice jump in the stairway. Given that the stairway is 186 inches to the floor, we put that into our equation. The equation then became, 186= 10.19 + 5.23x. To find out how many rubber bands we needed, we subtracted 10.19 from 186 and got 175.81 = 5.23x. To get x by itself, we divided 175.81 by 5.23 and got 33.6156 etc. We rounded the number to 34 rubber bands.== == When Kamikaze Ozzy took her first jump in the stairway, her head hit the railing of the stairs so she had to jump again. She jumped two more times, and her head ended up hitting the floor. The reason why she hit the floor was because we rounded our number up instead of down. We should have rounded our number to 33 instead of 34. Even 32 would have been better to round 33 to, just to make sure that Kamikaze Ozzy would not have hit her head. ==