statistics

A certain city holds a 100.5 mile running race. The following chart lists the times that a runner arrived at various mileage points along the way. Time (hours) 2.498 4.079 8.153 8.482 9.638 12.061 13.523 1?.698 21.343 22.049 23.905 a. What: was the runner's average speed? In. Graph the data, plotting time on the x-axis and distance on the yaxis. Do the data appear to lie approximately on a straight line? c. Find the equation for the least squares line. tting distance as a linear function of time. Y=DX+D :1. Calculate the correlation coefficient. Does it indicate a good t of the least squares line to the data? e. Based on your answer to part (d). what is a good value tor the runner's average speed? Compare this with your answer to part (a). Which answer do you think is better? Explain your reasoning