Circumference Investigation
Circumference Data Collection
Directions for Data Collection
Use the circle above to collect at least five data points in the data table. You will graph them as ordered pairs below then calculate the equation of the line of best fit and type it in one of the lines. Use the Gear icon below to label the axes and find a window that makes sense. Check that your equation goes through the points.
Slope calculation and meaning
Show how you calculated the slope. What does the slope mean in terms of the circumference and the diameter? For every diameter increase of ____________________......
Equation calculation
Show or explain your work to find the linear equation in y=mx+b.
The slope that you calculated is really close to what famous number?
Actual Circumference Formula
You may recall that the actual circumference formula is C = r. Why is your experimental formula slightly different? What does the y-intercept of 0 mean in terms of diameter and circumference?