Worksheets › Class 7 › Data Visualisation and Analysis
Class 7 · Computational Thinking and AI worksheetData Visualisation and Analysis
CBSE Computational Thinking and AI. Choosing bar, line and pie charts, pie chart angles, the biggest rise, mean, median, mode and range. Every sheet has 20 questions in three sections and an answer key, and the questions change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
To show how a value changes over months, the best chart is usually a:
- pictograph
- table only
- pie chart
- line graph
Answer
(d) line graph
- 2.
Which chart is best for showing how the whole class travels to school, as parts of a whole?
- a pie chart
- a map
- a Venn diagram
- a tally table
Answer
(a) a pie chart
- 3.
In a survey of 36 children, 1 walk to school. In a pie chart of the survey, what angle does this slice get?
- 1°
- 3°
- 20°
- 10°
Answer
(d) 10°
1/36 × 360°
Section B · short answer
- 4.
When should you use a pie chart?
Answer
To show how a whole is shared into parts, e.g. how a class travels to school.
- 5.
In a survey of 120 children, 119 come by car. In a pie chart of the survey, what angle does this slice get?
Answer
357°
119/120 × 360°
Section C · long answer
- 6.
A survey of 60 children: 24 walk, 18 bus, 12 cycle, 6 car. (a) Find the pie chart angle for each. (b) Which is the largest slice? (c) Check the angles add to 360°.
Answer
(a) Walk 144°, bus 108°, cycle 72°, car 36°. (b) Walk. (c) 144 + 108 + 72 + 36 = 360°.
Fresh sheets for your child
In the app, every Data Visualisation and Analysis sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.