A sports scientist investigated the effect of music tempo on athletic performance during high-intensity training using an independent groups design.
In Condition A, 12 participants performed a 500-metre rowing ergometer sprint while listening to ambient, slow-tempo music (80 BPM).
In Condition B, a different group of 12 participants performed the same 500-metre sprint while listening to fast-tempo electronic music (140 BPM).
The average power outputs (in Watts) achieved by the participants in Condition B are shown below in Table 1.
Table 1
| Participant | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average power output (W) | 210 | 245 | 195 | 230 | 220 | 260 | 185 | 240 | 215 | 250 | 205 | 235 |
The scientist decided to use the mean power output to analyse the performance.
State one advantage of using an independent groups design in this investigation.
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