## Question 6(a):

| Answer | Marks | Guidance |
|--------|-------|----------|
| Correct stem | B1 | Correct stem, ignore extra values (not in reverse) |
| Rebels leaves in order from right to left, lined up vertically, no commas | B1 | Correct Rebels labelled on left, leaves in order from right to left and lined up vertically, no commas |
| Sharks leaves in order, lined up vertically, no commas | B1 | Correct Sharks labelled on same diagram, leaves in order and lined up vertically, no commas |
| Key: $8 \| 7 \| 2$ means 78 kg for Rebels and 72 kg for Sharks | B1 | Correct key for their diagram, need both teams identified and 'kg' stated at least once here or in leaf headings or title. **SC** If 2 separate diagrams drawn, **SC B1** if both keys meet these criteria |

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## Question 6(b):

| Answer | Marks | Guidance |
|--------|-------|----------|
| Median $= 84$ (kg) | B1 | |
| $[\text{UQ} = 93, \text{LQ} = 80]\ 93 - 80$ | M1 | $95 \leqslant \text{UQ} \leqslant 89 - 79 \leqslant \text{LQ} \leqslant 82$ |
| $[\text{IQR} =]\ 13$ (kg) | A1 | WWW |

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## Question 6(c):

| Answer | Marks | Guidance |
|--------|-------|----------|
| Box and whisker with end points 75 and 102 | B1 | Whiskers drawn to correct end points not through box, not joining at top or bottom of box |
| Median and quartiles plotted as found in **(b)** | B1 FT | Quartiles and median plotted as box graph |

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## Question 6(d):

| Answer | Marks | Guidance |
|--------|-------|----------|
| e.g. Average weight of Rebels is higher than average weight of Sharks | B1 | Acceptable answers refer to: Range, skew, central tendency within context. E.g. range of Rebels is greater **B0**. Range of weights of the rebels is greater **B1**. Simple value comparison insufficient |