Data Relationships and PPDAC
📊 Part 1: Understanding Data Relationships
1. Circle the best definition of a data relationship:
A connection or pattern between two or more variables in a dataset
A single piece of information collected from one person
The process of collecting data using surveys
A graph showing only one variable
2. Which of these are examples of data relationships in New Zealand contexts? (Check all that apply)
Relationship between school decile and NCEA pass rates
Connection between rainfall and dairy production
Link between house prices and distance from Auckland CBD
Correlation between All Blacks wins and team training hours
A single student's height measurement
3. Explain why understanding data relationships is important in everyday life, using a New Zealand example:
🔄 Part 2: The PPDAC Framework
4. Fill in the blanks to complete the PPDAC cycle:
Problem: What _____________ are we asking?
Plan: How will we _____________ it using data?
Data: _____________ and managing data.
Analysis: _____________ and summarising the data.
Conclusion: Making sense and _____________ findings.
5. Match each PPDAC phase with its correct description:
1. Problem
2. Plan
3. Data
4. Analysis
5. Conclusion
A. Creating graphs and calculating statistics
B. Deciding what question to investigate
C. Collecting and organising information
D. Communicating results and making decisions
E. Choosing methods and tools for investigation
🏠 Part 3: Applying PPDAC - Housing in New Zealand
6. Consider this scenario: "A researcher wants to investigate how house prices relate to distance from the city centre in Auckland."
a) Problem Phase - What is the main investigative question?
b) Plan Phase - How could the researcher collect this data? List two methods:
c) Data Phase - What are the two main variables being studied?
Variable 1: _________________________
Variable 2: _________________________
d) Analysis Phase - What type of graph would be most suitable for showing this relationship?
Bar graph
Pie chart
Scatter plot
Histogram
e) Conclusion Phase - What might be one limitation or consideration when interpreting the results?
🎯 Part 4: Design Your Own Investigation
7. Choose a topic relevant to New Zealand students and design the first two phases of a PPDAC investigation:
Topic ideas: student wellbeing, sports participation, technology use, environmental concerns, cultural activities
Your chosen topic: _________________________________
Problem Phase: Write your investigative question:
Plan Phase: Describe how you would collect data to answer your question:
What ethical considerations might you need to think about when collecting this data?
🤔 Part 5: Reflection
8. Why is the PPDAC framework useful for statistical investigations? Give two reasons:
9. How can understanding data relationships help us make better decisions about issues in New Zealand?
10. What is one new thing you learned about statistics today?
