Question

The times, in seconds, for 8 athletes who ran a 100 m sprint on the sametrack are shown below. Find the mean time (seconds).10.2, 10.8, 10.9, 10.3, 10.2, 10.4, 10.1, and 10.4

Answer 1

Given: Time records for 8 athletes who ran 100 m sprint is 10.2, 10.8, 10.9, 10.3, 10.2, 10.4, 10.1, and 10.4 (in seconds).

Required: To determine the mean time.

Explanation: The mean of n number of observations is the ratio of the sum of all the observations to the number of observations.

Thus,

$Mean=\frac{10.2+10.8+10.9+10.3+10.2+10.4+10.1+10.4}{8}$

Further solving-

$\begin{gathered} Mean=\frac{83.3}{8} \\ =10.4125 \end{gathered}$

Final Answer: The mean time is 10.4125 seconds.