Graph the Data

Make a graph of the data by plotting the above points, letting the x axis represent the number of students and the y axis represent the number of seconds.

Analyze the Data

1. Should we connect the points to make a solid graph? Why or why not?

2. Are the points scattered all around the plane or do the points tend to be a certain shape?

3. Make a prediction- Based upon the data collected, how many seconds would it take to pass the hand squeeze around a circle of 100 people? How many minutes?

4. Draw in what you feel is the line of best fit. Write the equation for that line.

5. Compare your line of best fit with your teacher and your classmates - whose do you think is closest and why?

6. Use the graphing calculator to find the line of best fit.

Thought Question

Imagine students lined up from your city or town to Mexico City. How long would it take to pass the hand squeeze all the way there? You can find the distance at http-//www.indo.com/cgi-bin/dist.