Bar Charts & Pictograms: WJEC GCSE Foundation June 2023 Unit 2 Q15

Foundation June 2023 Unit 2 Q15

WJECFoundationCurrent spec3 marksBar Charts & Pictograms Pie Charts

15. A box contains different-coloured balls.
Some are red, some are blue and the others are green.

The bar chart shows how many balls of each colour are in the box.

Draw an accurate pie chart to compare the number of coloured balls in the box.
Part of the pie chart has been completed for you. [3]

Mark scheme

Scheme	Marks	Comments
Correctly drawn pie chart within tolerance AND correctly labelled Red = 72(°) (allow 70° to 74°) Green = 108(°) (allow 106° to 110°)	B3	Award B2 for one of the following: correctly drawn pie chart within tolerance but not labelled or incorrectly labelled pie chart drawn within tolerance but not a straight line pie chart drawn not starting from the centre (but end point within tolerance) sight of red = 72(°) sight of green = 108(°). Award B1 for sight of one of the following: 72(°) 108(°) (red=) \(\dfrac{2}{10} \times 360\) or equivalent (red=) \(\dfrac{2}{5} \times 180\) or equivalent (green=) \(\dfrac{3}{10} \times 360\) or equivalent (green=) \(\dfrac{3}{5} \times 180\) or equivalent ‘their derived 72’ and ‘their derived 108’ drawn correctly, provided that ‘their 72’ + ‘their 108’ = 180 and identified as red and green, and not 90°.

Scheme

Marks

Comments

Correctly drawn pie chart within tolerance AND correctly labelled

Red = 72(°) (allow 70° to 74°)
Green = 108(°) (allow 106° to 110°)

Award B2 for one of the following:

correctly drawn pie chart within tolerance but not labelled or incorrectly labelled
pie chart drawn within tolerance but not a straight line
pie chart drawn not starting from the centre (but end point within tolerance)
sight of red = 72(°)
sight of green = 108(°).

Award B1 for sight of one of the following:

72(°)
108(°)
(red=) \(\dfrac{2}{10} \times 360\) or equivalent
(red=) \(\dfrac{2}{5} \times 180\) or equivalent
(green=) \(\dfrac{3}{10} \times 360\) or equivalent
(green=) \(\dfrac{3}{5} \times 180\) or equivalent
‘their derived 72’ and ‘their derived 108’ drawn correctly, provided that ‘their 72’ + ‘their 108’ = 180 and identified as red and green, and not 90°.