The table shows scores achieved by an athlete undertaking a series of tests to assess the same performance outcome. Each test was administered five times under the same conditions.
\begin{array}{|l|c|c|c|c|}
\hline & \textit{Test 1} & \textit{Test 2} & \textit{Test 3} & \textit{Test 4} \\
\hline \text{Scores} \quad & 10,10,6,4,0 & 8,8,4,4,2 & 10,8,6,4,4 & 6,6,6,6,4 \\
\hline \text{Total} & 30 & 26 & 32 & 28 \\
\hline
\end{array}
Which test is likely to have been the most reliable?
- Test 1
- Test 2
- Test 3
- Test 4