Pearson Edexcel IAL Mathematics S1.2.4 Skewness
Practise describing skewness and outliers from box plots, quartiles, means and medians, with reasons tied to the data.
- Syllabus
- First assessment 2019
- Course
- Mathematics YMA01
- Level
- AS
Exam points
- compare Q₂−Q₁ with Q₃−Q₂, or mean with median, to justify skewness
- apply the stated 1.5×IQR rule to show whether a value is an outlier
- interpret skew or outliers on a box plot in the context of the data
S1.2.4 - Skewness question 1
The histogram shows the times taken, in seconds, by each of 260 people to complete a puzzle.
Describe the skewness of these data. Give a reason for your answer.
Three of the 260 people are chosen at random.
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