An industrial engineer measured the efficiency gains of a newly installed automated packaging robot over several calibration cycles. Table 1 shows the processing time per standard batch across 8 calibration cycles.
Table 1: Processing time per standard batch across 8 calibration cycles
| Calibration Cycle | Processing time per standard batch (seconds) |
|---|---|
| 1 | 360 |
| 2 | 270 |
| 3 | 180 |
| 4 | 120 |
| 5 | 75 |
| 6 | 45 |
| 7 | 30 |
| 8 | 15 |
The engineer compared the robot's processing speed at Calibration Cycle 8 with its speed at Calibration Cycle 1. He found that after calibration was complete, the robot's operating speed was:
12 times faster than it was at the start.
15 times faster than it was at the start.
18 times faster than it was at the start.
24 times faster than it was at the start.
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.