Te reo Māori terms
click each term to open in Te Aka
Learning objective overview
Master Teaching Guide coverage for this objective.
Current NZC (2007)
S5-1
New NZC (2026)
NZC26-P4-STA-INT-P-Y10-02NZC26-P3-STA-INT-K-Y7-02
Resources
- Alpha textbook: Box and Whisker plots, Ex 30.05-Ex 31.02, pg 517-542
- Beta: Skills in Ex 30.01, pg 562
- Beta: Skills in Ex 30.02, pg 570
- CorbettMaths - Box PlotsQuestions PDF · Answers
Terminology
- box-and-whisker graphs
- centre
- shape
- spread
- left skew / left tail
- right skew / right tail
- bell curve
Task goals
- Apply the 75%-to-50% comparison rule when one distribution's quartile lies beyond the other distribution's median.
- Recall what C, S, S, and I each stand for in the CSSI framework for comparing box-and-whisker plots.
- Read the five-number summary (minimum, lower quartile, median, upper quartile, maximum) off a box-and-whisker plot.
- Calculate and compare the interquartile range (IQR) and range as measures of spread.
- Identify a distribution's shape (left skew, right skew, or symmetric) from the relative size of the box and whisker sections.
- Identify outliers and other interesting or unusual features on a box-and-whisker plot.
- Compare two or more distributions using centre, shape, spread, and interesting features together, and justify conclusions drawn from the comparison.
Where this fits
What leads into this objective, and where it goes next.
You are here
Comparing box-and-whisker graphs - CSSI
Do
Making an informal inference in comparative situations about what might be happening in the population, based on visual considerations and using the 75%-to-50% comparison rule
Statement▸
Year 10 · Statistics · Interpretation of data
NZC26-P4-STA-INT-P-Y10-02
Also under S5-1:
For teachers
Need the fuller teaching notes for this objective? Open the Teacher guidance PDF.