Grade 11 Maths · Statistics · Paper 2
Symmetrical and Skewed Data Grade 11
Real Symmetrical and Skewed Data past paper questions and answers from 2024 to 2025, with each memo split into the ticks examiners give. Try one, mark yourself, and see exactly which skill cost you marks.
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Question 1.5 · November 2024 · Paper 2 · Provincial · 2 marks
Work it out on paper first. Then mark yourself with the official memo, one tick at a time.
Symmetrical and Skewed Data skills
Each skill is one thing a memo gives a tick for. Tap one for its own questions, notes and videos.
- Interpret data and draw conclusionsExplain what data shows in real life, for example compare two classes' results or say whether a graph is misleading.4 past paper questions · 4 videos
- Draw a box and whisker diagramDraw a box and whisker diagram from the minimum, quartiles, median and maximum on a number line, and read values from one.5 past paper questions · 3 videos
- Describe skewness and outliersSay whether data is symmetric, skewed left or skewed right, and spot outliers, for example when the mean is much bigger than the median.6 past paper questions · 3 videos
More Symmetrical and Skewed Data Grade 11 questions and answers
Try each one on paper before you open the memo.
4. Question 1.4.1 · November 2024 · Paper 2 · Provincial · 1 mark
The traffic department set up a roadblock on the N12 between Potchefstroom and Klerksdorp. During the first hour, they stopped 11 minibus taxis.
The following dataset is a summary of the number of passengers per minibus taxi.
18, 26, 25, 18, 16, 12, 10, 8, 18, 17, 81.4 During the second hour of the roadblock, a further 5 minibus taxis were stopped. The number of passengers in these 5 taxis are: , 13, 18, , 20.
These 5 numbers are already arranged from smallest to largest.
The entire dataset for the first and second hours is collectively represented on a box-and-whisker diagram. The new average number of passengers for the 16 taxis is 16. The five-number summary can be seen on the diagram below.
Answer the questions that follow.
1.4.1 Discuss the skewness of the data.(1)Show the memo (1 tick)Memo
- ✓AnswerSkewed to the left.
1 mark · Describe skewness and outliers
- ✓
Symmetrical and Skewed Data Grade 11 videos
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