Road lengths surveyed in km were 8.4, 9.1, 9.8, 10.5 and 16.2. What is the mean length in km?
Q1. Road lengths surveyed in km were 8.4, 9.1, 9.8, 10.5 and 16.2. What is the mean length in km?
Answer: 11.0
Explanation: Mean = (8.4 + 9.1 + 9.8 + 10.5 + 16.2)/5 = 54.0/5 = 10.8 km, which is the arithmetic average of all five road lengths.