Answer:
Explanation:
To find the mean/average of each child: Add all their times and divide by the number of times there are.
Nelson=(108+130+106+121+126+124+110+124+122)/9
=119
Tyrese=(117,119,118, 120, 136, 118, 118,120, 123)/9
=121
Nelson-Tyrese = 119-121 = -2
For median list numbers in order and pick middle number
Nelson
106, 108, 110, 121, 122, 124, 124, 126, 130
Nelson median=122
Tyrese
117, 118, 118, 118, 119, 120, 120, 123, 136
Tyrese median =119
Based on the data Tyrese is more likely to finish 120 or less. Most of his times are under that, even though nelson has a better average.