An engineering firm is testing the flight endurance of two different prototype delivery drones, Model Alpha and Model Beta, under identical payload conditions. The flight times (in minutes) of 50 test flights for each drone model were recorded.
Table 1: Mean flight times and standard deviations
| Model Alpha | Model Beta | |
|---|---|---|
| Mean (minutes) | 112.4 | 108.9 |
| Standard deviation (minutes) | 3.2 | 12.5 |
What do the standard deviation values in Table 1 suggest about the flight endurance of the two drone models? 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.