Year 8 · Mathematics and Statistics · PPDAC
Statistical Investigation Project
Ingoa / Name:
Akomanga / Class:
Ngā Whāinga Ako — Learning Intentions
- Carry out a complete statistical investigation.
- Use displays and summary measures to find the story in data.
- Communicate a conclusion that answers the question and respects the people represented.
Paearu Angitu — Success Criteria
- I can show evidence for every PPDAC stage.
- I can explain why my collection method and display are appropriate.
- I can support my conclusion with at least two specific features of the data and name a limitation.
Your challenge
Investigate a question that is useful to your class, kura, whānau, or local environment. Build the project during Lessons 2–10; do not wait until the final lesson.
Mātauranga Māori and data care: use tikanga and kaitiakitanga when information represents people or whenua: ask permission, avoid sensitive personal questions, collect only what you need, anonymise people, and agree where the final findings may be shared.
What to print: one project brief per student or investigation team. All referenced planning and evidence spaces are provided in this packet; graph paper or a digital graphing tool is optional.
P — Problem
My investigative question names the variable and group:
P — Plan
Method, sample, recording tool, permission/privacy check, and one possible source of bias:
D — Data
Attach or paste your raw-data record and cleaned table. Note one correction you made:
A — Analysis
Attach one appropriate display. Record relevant centre/spread values and two patterns or differences:
C — Conclusion
Answer the question using at least two pieces of evidence. Name a limitation and one improvement:
Evidence rubric
| Evidence | Developing | Secure | Extending |
|---|---|---|---|
| Question & plan | Question or method needs clarification. | Question is measurable; method and data care are appropriate. | Choices are justified and possible bias is anticipated. |
| Data & display | Record or display has gaps or errors. | Data is organised; display is accurate and suitable. | Display choices reveal comparison, variation, or trend especially clearly. |
| Analysis | Comments are mostly descriptive. | Relevant measures and at least two data features are interpreted in context. | Features are connected and alternative explanations are considered. |
| Conclusion | Answer is only partly linked to evidence. | Conclusion answers the question, cites evidence, and names a limitation. | Claim strength is evaluated and a precise next investigation is proposed. |
Curriculum alignment
NZC 2007 Mathematics and Statistics, Level 4 — Statistical investigation: this project requires the statistical enquiry cycle, data collection, multivariate category or measurement data, patterns/variation, and appropriate displays. See the unit curriculum companion for the exact verified source wording.
Kaiako feedback / He urupare: