98 divided by 4.5 is 21.78
0.0005
98 - 45 = 53
143
98 divided by 5 is 19.6
98
0.1122
1.4
1.96
14
0.1137
Mean = "average" = (sum of samples) / (number of samples)Mean = (1/9) x (98 + 98 + 98 + 45 + 84 + 84 + 52 + 45 + 37) = 641/9 = 71.222 (rounded, repeating)
98