📊 Part 1: Data Collection Methods
1. Which of these is the BEST method to collect data about students' favourite subjects at your school?
Ask only your friends
Use random sampling of all students
Ask only Year 13 students
Survey students outside the maths classroom
2. You want to investigate "How much time do Year 11 students spend on homework each week?" What type of variable is "hours spent on homework"?
Categorical
Numerical continuous
Numerical discrete
Ordinal
3. Which ethical considerations are important when collecting data? (Select all that apply)
Getting informed consent from participants
Keeping data confidential and secure
Sharing individual responses publicly
Respecting cultural values about data as taonga
4. A data dictionary helps us to:
Find spelling mistakes in our data
Describe what each variable means and how it's measured
Calculate the mean of our data
Create graphs automatically
🔍 Part 2: Data Management and Analysis
5. Look at this data about students' ages: 16, 17, 15, 16, 61, 17, 16, 15. What error can you identify and how would you fix it?
Error identified: _________________________________
How to fix it: _________________________________
6. You have collected data on students' travel time to school in minutes: 5, 8, 12, 15, 18, 22, 25, 28, 35, 45, 60. You want to group this data into categories. Complete the data dictionary below:
Variable Name: ________________________
Variable Type: ________________________
Categories/Groups:
Units: ________________________
7. What type of graph would be most appropriate to display the travel time data from Question 6?
Pie chart
Histogram
Scatter plot
Line graph
💭 Part 3: Critical Thinking and Communication
8. A newspaper headline claims: "Students who eat breakfast score 20% higher on tests!" What questions should you ask about this claim before accepting it?
9. You are investigating whether there's a relationship between hours of sleep and academic performance. Describe one way you could collect this data ethically and one potential source of bias in your method.
Ethical collection method:
Potential source of bias:
10. Explain why it's important to treat data as taonga (treasure) when working with information about people and communities in New Zealand.
