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Data Visualisation Skills Worksheet

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Data Visualisation Skills Worksheet

Choose the most suitable way to display data, interpret what a visualisation shows, and plan a graph. For questions asking you to explain, give a clear reason.

Choosing and using graphs

1.A class records which after-school activity each student prefers. Which graph is most suitable for comparing the number of students in each activity category?

Scatter plot
Bar graph
Time-series graph
Line graph

2.Mere records the daily rainfall in Wellington for 14 days and wants to show how it changes from day to day. Which graph would be most suitable?

Pie chart
Dot plot
Time-series graph
Bar graph

3.Which practices are responsible when gathering survey data? Select all that apply.

Ask participants for permission where appropriate
Use neutral wording in questions
Collect only answers that agree with your prediction
Protect participants’ private information

4.A student has a list of numerical results, such as the number of goals scored by each player. What is a dot plot especially useful for showing?

How values are distributed and how often each value occurs
How one value changes over time
The parts that make up a whole
Whether two variables are related

Interpreting data

Pages read

Number of students

5.Use the data table to find the mode: how many pages did the greatest number of students read?

6.A graph shows the number of hot drinks sold at a café in each month of the year. Describe one seasonal pattern you might expect in New Zealand, and explain why it could occur.

7.A survey of 36 students found that 14 preferred sushi, 9 preferred noodles and 13 preferred sandwiches. Which lunch option was most popular, and how many students chose it?

8.Explain what makes this survey question biased: “Surely you agree that school lunches should be free?”

Planning and making a visualisation

9.A group measures how many minutes each person cycles on each day of one school week. Name a suitable graph, then give an appropriate x-axis label and y-axis label.

10.Make a dot plot for these counts of books borrowed by nine students: 0, 0, 1, 1, 1, 2, 2, 3, 4. Add one dot for each student above the matching number.

11.Name two features that help a reader understand a graph made with digital software.

12.Give one reason why choosing a graph that suits the data matters.