← VCE Data Analytics U3O1

Writing a prompt to generate a data visualisation

An instruction to an AI tool that names the data fields, chart type, title, axis labels, colours and audience so it can build a clear, suitable chart.

Part of: VCE Data Analytics - U3O1 - Data Analytics — Module 131

Understanding Writing a prompt to generate a data visualisation in VCE Data Analytics U3O1

What it does: This prompt sets the chart type (line) and links it to the data fields (Sales over Month), which suits a trend over time. Naming the exact fields (Day and Rain) means the AI uses the right data. 'The numbers' could mean any column. The audience affects how simple or detailed the chart should be. Naming who will read it helps the AI choose a suitable level. Style details such as colours and axis labels should be stated in the prompt. Leaving them out means the AI picks them for you.

Common mistakes: A good prompt gives a meaningful title that says what the chart shows. 'Chart' tells the AI and the viewer nothing. It should be something like 'Title: Maths marks by student'. The axes are swapped. Time (Day) belongs on the x-axis and the measured value (Max temp) on the y-axis. It should be 'X-axis: Day, Y-axis: Max temp'.

Class: _____________________  ·  Name: _____________________  ·  Date: _________

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This module's key terms are also in a printable crossword (Modules 130–148) and word search (Modules 94–148).

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Learning
Duo
Which prompt is better for an AI tool?
Make a chart of my dataCreate a column chart of Maths marks by student from columns A and B, titled 'Maths Marks', for Year 11 students
Matches
Make a chart of my data
↓
Too vague: it does not name the data fields, chart type, title, labels, colours or audience.
Applying
Meanings
Term
visualisation prompt
Meaning
An instruction to an AI tool that names the data fields, chart type, title, axis labels, colours and audience so it can build a clear, suitable chart.
Practice
Create a column chart using the Name and Maths columns.
Testing
Gaps
Draw a to show the trend.
Check Answer
Spots
2Chart: bar chart
3Title: Chart

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Quick Questions

1. Which prompt is better for an AI tool?
A. Create a column chart of Maths marks by student from columns A and B, titled 'Maths Marks', for Year 11 students ✓
B. Make a chart of my data
A good prompt names the chart type, the data fields, the title and the audience. 'Make a chart of my data' leaves the AI to guess all of them.
2. Which part of a prompt names the chart type?
A. Show daily Max temperature in a nice way
B. Draw a line chart of daily Max temperature ✓
The chart type (line, column, pie, scatter) must be named directly. 'In a nice way' does not tell the AI what chart to build.
3. Which prompt names the data fields clearly?
A. Use the Day column for the x-axis and the Rain column for the y-axis ✓
B. Use the numbers from my spreadsheet
Naming the exact fields (Day and Rain) means the AI uses the right data. 'The numbers' could mean any column.
4. Which prompt includes the audience?
A. Make the chart as detailed as possible
B. Make the chart simple and easy to read for a Year 7 class ✓
The audience affects how simple or detailed the chart should be. Naming who will read it helps the AI choose a suitable level.
5. Which prompt includes style details such as colours and labels?
A. Use blue bars, label the x-axis 'Subject' and the y-axis 'Mark' ✓
B. Use whatever colours and labels you like
Style details such as colours and axis labels should be stated in the prompt. Leaving them out means the AI picks them for you.

Match the Pairs

Use the Month and Sales columns → Names the data fields the chart must use
Audience: Year 9 students → States who will read the chart so the AI can pitch it at the right level
A prompt should state a chart type that suits the data, such as a line chart for change over time → Create a line chart of Sales by Month
Style details such as title, axis labels and colours make the chart clear and consistent → Title it 'Monthly Sales', label the y-axis 'Sales ($)' and use blue bars
Make a chart of my data → Too vague: it does not name the data fields, chart type, title, labels, colours or audience.
Make a pie chart of Temperature by Day → The chart type does not suit the data. A pie chart shows parts of a whole, not change over days.

Key Term

visualisation prompt
An instruction to an AI tool that names the data fields, chart type, title, axis labels, colours and audience so it can build a clear, suitable chart.

Fill in the Blanks

1. Use the weather sheet columns Day and Max. Draw a line chart to show the trend.
Hint: Type the chart type that best shows change over time.
2. Data: weather sheet, columns Day and Rain. Chart: column chart of daily rainfall. Title: Rainfall by Day
Hint: Type the name of the data field that holds the rainfall values.
3. Chart: pie chart of Qty by Category. Audience: Year 7 students, keep it simple.
Hint: Type the label that tells the AI who will view the chart.
4. Chart: bar chart of Maths and English marks. Style: use two colours, blue and orange.
Hint: Type the word for what you set to make the bars easy to tell apart.
5. Data: Day and Max from the weather sheet. Chart: line chart of Max temperature by Day. Add axis labels and a title to the chart.
Hint: Type the word for the text that names each axis.

Spot the Error

Question 1
A Data: marks.csv (Name, Maths)
B Chart: bar chart
C Title: Chart
D Audience: Year 11 class
Line C — A good prompt gives a meaningful title that says what the chart shows. 'Chart' tells the AI and the viewer nothing. It should be something like 'Title: Maths marks by student'.
Question 2
A Data: weather.csv (Day, Max)
B Chart: line chart
C X-axis: Max, Y-axis: Day
D Colours: blue line
Line C — The axes are swapped. Time (Day) belongs on the x-axis and the measured value (Max temp) on the y-axis. It should be 'X-axis: Day, Y-axis: Max temp'.
Question 3
A Data: shop.csv (Item, Qty)
B Chart: line chart
C Title: Stock by item
D Audience: Shop manager
Line B — Line charts show change over time. Comparing stock across separate items is a job for a column or bar chart, so the prompt should say 'Chart: column chart'.
Question 4
A Data: study.csv (Hours, Mark)
B Chart: pie chart
C X-axis: Hours studied
D Y-axis: Mark
Line B — A pie chart shows parts of a whole. To show the relationship between two numeric fields (Hours and Mark), the prompt should ask for a scatter graph.
Question 5
A Data: marks.csv (Name, Mark)
B Chart: bar chart
C Title: Marks by student
D Style: tiny text, 12 colours
E Audience: Year 7 students
Line D — The style must suit the audience. Tiny text and 12 colours would be hard for Year 7 students to read. It should ask for large text and a few clear colours.

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