A sports scientist conducted a study to compare the effectiveness of two different 10-minute warm-up routines designed to improve the reaction times of competitive esports players.
A sample of players was randomly assigned to one of the two routines. Each player's reaction time (in milliseconds) was measured immediately before and immediately after completing their assigned warm-up routine.
| Routine A (Dynamic Drills) | Routine B (Static Stretching) | |||
|---|---|---|---|---|
| Before routine | After routine | Before routine | After routine | |
| Mean reaction time (ms) | 258 | 194 | 255 | 248 |
| Standard deviation (ms) | 14.5 | 12.1 | 13.8 | 14.2 |
What do the mean values in Table 1 suggest about the effectiveness of the different warm-up routines? Justify your answer.
235 exam-style questions on AQA A Level Psychology Data handling and analysis. Each one has a worked solution and a mark scheme showing where the marks go.