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?

Name and describe the three most important measures of central tendency. choose the correct answer below. a. the mean, sample size, and mode are the most important measures of central tendency. the mean of a data set is the sum of the observations divided by the middle value in its ordered list. the sample size of a data set is the number of observations. the mode of a data set is its highest value in its ordered list. b. the sample size, median, and mode are the most important measures of central tendency. the sample size of a data set is the difference between the highest value and lowest value in its ordered list. the median of a data set is its most frequently occurring value. the mode of a data set is sum of the observations divided by the number of observations. c. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is the product of the observations divided by the number of observations. the median of a data set is the lowest value in its ordered list. the mode of a data set is its least frequently occurring value. d. the mean, median, and mode are the most important measures of central tendency. the mean of a data set is its arithmetic average. the median of a data set is the middle value in its ordered list. the mode of a data set is its most frequently occurring value.