Two boys are running a speed test on their robotic device for a competition. They need to get an idea of their robot’s speed to determine whether they need to make any adjustments to win the racing portion of the competition. They’ve marked off start and finish lines for a course that’s 200 inches long. They have a stopwatch to measure the time it takes for the robot to go from the start line to the finish line. In past tests, their robot has taken no more than 2 minutes to go 200 inches. They are hoping this test will show improvement in their robot’s speed. If the boys plan to graph the data they collect during the test, which graph uses a degree of precision appropriate to the limits of the test?