Te reo Māori terms
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Learning objective overview
Master Teaching Guide coverage for this objective.
Current NZC (2007)
S4-1
New NZC (2026)
NZC26-P4-STA-VIS-K-Y9-01
Resources
- CorbettMaths - Mode, Range from a Frequency TableQuestions PDF · Answers
- CorbettMaths - Estimated Mean (grouped data)Questions PDF · Answers
Terminology
- Grouped frequency table
- Class interval
- Tally
- Frequency
- Modal class
- Midpoint
- Estimated mean
Task goals
- Foundation: Complete a grouped frequency table by tallying a small raw data set into given equal-width class intervals.
- Proficient: Choose sensible equal-width class intervals for a larger raw data set, build the full grouped frequency table, and state the modal class.
- Excellence: Use midpoints of class intervals to estimate the mean of grouped data and explain how the choice of interval width affects the accuracy of that estimate.
Where this fits
What leads into this objective, and where it goes next.
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Grouped Frequency Tables
Know
A distribution is formed from all the possible values of a variable and their frequencies. It can be shown using data visualisations that show patterns, trends, and variations and that include dot plots, bar graphs, frequency tables, box plots, histograms, time-series graphs, scatter plots, and two-way tables.
Statement▸
Year 9 · Statistics · Visualisation of data
NZC26-P4-STA-VIS-K-Y9-01
Also under S4-1:
For teachers
Need the fuller teaching notes for this objective? Open the Teacher guidance PDF.