[ CBSE CLASS 7 / ARTIFICIAL INTELLIGENCE / CHAPTER 3 / 2026-27 ]

Class 7 AI: Data Visualization – Questions and Answers

The Class 7 Data Visualization chapter teaches how to choose the right chart (line, bar, pie or scatter) to show data clearly, and how to spot misleading graphs. Choosing a chart is abstraction; reading trends from it is pattern recognition.

Practise 6 questions Printable worksheet
Skills: Abstraction · Pattern recognition · Linked to Part 2: Artificial Intelligence

[ WORKED EXAMPLE ]

Which chart best shows how the temperature changed each day over a month?

Answer: Line graph.

  1. Time goes along the horizontal axis.
  2. A line connects each day’s value, showing rises and falls.
  3. So a line graph is best.

What this chapter is about

Students learn which chart fits which question: line graphs for change over time, bar graphs for comparing categories, pie charts for parts of a whole and scatter plots for relationships.

They read values and trends, and check whether pie-chart parts add up to 100%.

They learn to spot misleading charts, such as an axis that does not start at zero.

[ PRACTICE MODE / 6 QUESTIONS ]

Try it yourself

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AbstractionQuestion 1 of 6 · Score 0

Which chart best shows how the temperature changed each day over a month?

Choose one answer

All Data Visualization questions with answers

Try each one first, then open it to check the answer and the reasoning.

Q1Which chart best shows how the temperature changed each day over a month?
  • Line graph
  • Pie chart
  • Table of names
  • Word cloud

Answer: A. Line graph

Hint: The question is about change over time.

  1. Time goes along the horizontal axis.
  2. A line connects each day’s value, showing rises and falls.
  3. So a line graph is best.

Skill: Abstraction · Level: easy · Report an error

Q2You want to compare how many students chose each sport. Which chart fits best?
  • Bar graph
  • Line graph
  • Scatter plot
  • Map

Answer: A. Bar graph

Hint: You are comparing separate categories.

  1. Each sport is a separate category.
  2. Bars of different heights make comparison easy.
  3. A bar graph fits best.

Skill: Abstraction · Level: easy · Report an error

Q3Which chart best shows what share of a family’s monthly budget goes to food, rent, travel and savings?
  • Pie chart
  • Line graph
  • Scatter plot
  • Number line

Answer: A. Pie chart

Hint: The parts make up one whole budget.

  1. The categories together make 100% of the budget.
  2. A pie chart shows each part as a slice of the whole.
  3. So a pie chart fits best.

Skill: Abstraction · Level: medium · Report an error

Q4A pie chart shows cricket 40%, football 25%, kabaddi 20% and badminton. What percentage is badminton?
  • 10%
  • 15%
  • 20%
  • 25%

Answer: B. 15%

Hint: All slices of a pie chart add up to 100%.

  1. 40 + 25 + 20 = 85.
  2. 100 − 85 = 15.
  3. Badminton is 15%.

Skill: Decomposition · Level: medium · Report an error

Q5A bar graph’s vertical axis starts at 90 instead of 0. Two bars show 92 and 96. What is the problem?
  • The small difference looks much bigger than it is
  • The graph is perfectly fair
  • The bars are the wrong colour
  • Nothing can be read from it

Answer: A. The small difference looks much bigger than it is

Hint: Compare how tall the bars look with the real numbers.

  1. From 90, the bars look like 2 and 6 units tall, so one looks 3 times bigger.
  2. Really, 96 is only about 4% more than 92.
  3. A cut axis exaggerates differences: a common way graphs mislead.

Skill: Pattern recognition · Level: challenge · Report an error

Q6You want to see whether students who study more hours get higher marks. Which chart helps most?
  • Scatter plot
  • Pie chart
  • Single bar
  • Pictograph of books

Answer: A. Scatter plot

Hint: You are looking for a relationship between two number variables.

  1. Each student is one dot: hours across, marks up.
  2. If dots rise from left to right, more study goes with higher marks.
  3. A scatter plot shows relationships like this.

Skill: Pattern recognition · Level: medium · Report an error

Frequently asked questions

What does the Class 7 Data Visualization AI chapter cover?

The Class 7 Data Visualization chapter teaches how to choose the right chart (line, bar, pie or scatter) to show data clearly, and how to spot misleading graphs. Choosing a chart is abstraction; reading trends from it is pattern recognition.

Which computational thinking skills does Data Visualization use?

Data Visualization mainly practises abstraction, pattern recognition. It links to Part 2: Artificial Intelligence.

Where are the official CBSE Data Visualization questions?

The official questions are in the CBSE Class 7 Computational Thinking and AI handbook for 2026-27, free on the CBSE Academic website. The practice on this page is original and mapped to the same chapter.

More Class 7 chapters