Te reo Māori terms
click each term to open in Te AkaLearning objective overview
Master Teaching Guide coverage for this objective.
Resources
- Alpha textbook: Box and Whisker plots, Ex 30.08, pg 532-533
- CorbettMaths on quartilesQuestions PDF · Answers
- Beta: Skills in Ex 30.01, pg 562
Terminology
- Minimum
- Lower Quartile / Q1
- Median / Q2
- Upper Quartile / Q3
- Maximum
- Interquartile range
- Box-and-whisker graph
- Dot plot
Task goals
- Sort a dataset and split it into quarters to locate Q1, the median (Q2), and Q3, using the exclusive method (excluding the overall median from each half when the count is odd).
- Calculate the interquartile range (IQR = Q3 - Q1) and explain that it measures the spread of the middle 50% of the data.
- Read the five-number summary (minimum, Q1, median, Q3, maximum) from a box-and-whisker graph, including comparing two or more box plots by their medians and IQRs.
- Explain why the IQR is a more outlier-resistant measure of spread than the range.
- Determine what fraction of a dataset lies above or below a given quartile (e.g. recognise that one quarter of the data lies below Q1).
Key skills
- Quartiles
- IQR
- Box plot
Quick stats
- 81 total questions
- 3 difficulty levels
- Answers included
For teachers
Need the fuller teaching notes for this objective? Open the Teacher guidance PDF.