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NSWMaths Standard 2Quick questions
Year 11: Data Analysis
Quick questions on Outliers, shape and describing distributions for HSC Maths Standard 2
6short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is the interquartile range, quickly?Show answer
The interquartile range is the spread of the middle half of the data:
What is the outlier test?Show answer
An outlier is a value that lies unusually far from the rest of the data. The standard test draws two fences:
What is shape?Show answer
The shape of a distribution is how the data sits around its centre. There are three shapes you must name on sight:
What is modality?Show answer
Modality counts the clear peaks in the data:
What is writing a full "describe the distribution" answer?Show answer
When a question says "describe the distribution", markers expect a checklist, not a vibe. Cover four features, in this order:
What is only testing one fence?Show answer
Always check both the lower and the upper fence. A question often hides a low outlier while you focus on an obvious high one.
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