Question 1
Paper 1, no calculatorEasy6 marksThe table shows the five-number summaries for daily journey times at two depots.
| Depot | Minimum (min) | Lower quartile (min) | Median (min) | Upper quartile (min) | Maximum (min) |
|---|---|---|---|---|---|
| A | 12 | 18 | 24 | 30 | 36 |
| B | 10 | 16 | 22 | 29 | 40 |
(a)[1]
Write down the median journey time for depot A.
(b)[2]
Calculate the interquartile range for each depot.
(c)[1]
State which depot has less variation among the middle 50% of journey times.
(d)[2]
State which depot’s distribution appears more nearly symmetric, giving a feature of its five-number summary to support your answer.