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CBSE · Class 7 · Computational Thinking and AI

Data Visualisation and Analysis

Standard difficulty · 20 questions · 40 marks · Time: 36 minutes

Name: Date: Score: ____ / 40

Show your working for Sections B and C. Answers are on the last page — try every question first!

Section A — Choose the correct answer8 × 1 = 8 marks
1.
To show how a value changes over months, the best chart is usually a:
  1. pictograph
  2. table only
  3. pie chart
  4. line graph
2.
Which chart is best for showing how the whole class travels to school, as parts of a whole?
  1. a pie chart
  2. a map
  3. a Venn diagram
  4. a tally table
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. 1°
  2. 3°
  3. 20°
  4. 10°
4.
A line graph shows trees planted each month: Jan 90, Feb 20, Mar 150, Apr 125, May 95, Jun 125. Between which two months did the line rise the most?
  1. Feb to Mar
  2. Mar to Apr
  3. Apr to May
  4. Jan to Feb
5.
Goals scored in 7 matches: 11, 16, 6, 30, 22, 24, 24. What is the mean?
  1. 6
  2. 22
  3. 19
  4. 30
6.
Goals scored in 7 matches: 16, 15, 4, 14, 30, 20, 19. What is the median?
  1. 30
  2. 17
  3. 16
  4. 4
7.
Goals scored in 7 matches: 19, 14, 23, 11, 19, 27, 22. What is the mode?
  1. 19
  2. 11
  3. 27
  4. 20
8.
Goals scored in 5 matches: 11, 28, 10, 2, 3. What is the range?
  1. 26
  2. 28
  3. 11
  4. 10
Section B — Short answer8 × 2 = 16 marks
9.
When should you use a pie chart?
10.
In a survey of 120 children, 119 come by car. In a pie chart of the survey, what angle does this slice get?
11.
A line graph shows trees planted each month: Jan 75, Feb 50, Mar 60, Apr 130, May 95, Jun 90. Between which two months did the line rise the most?
12.
Goals scored in 7 matches: 16, 7, 15, 28, 25, 17, 4. What is the mean?
13.
Goals scored in 7 matches: 30, 17, 13, 5, 8, 25, 29. What is the median?
14.
Goals scored in 5 matches: 26, 19, 10, 23, 26. What is the mode?
15.
Goals scored in 7 matches: 6, 2, 12, 23, 20, 20, 26. What is the range?
16.
Marks out of 100:
Name: Maths, Hindi, Art
Sana: 25, 75, 75
Kabir: 20, 20, 100
Zoya: 95, 70, 65
Asha: 90, 70, 35
How many children scored more than 65 in Hindi?
Section C — Word problems4 × 4 = 16 marks
17.
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°.
18.
A survey of 72 children: 11 walk, 10 bus, 38 cycle, 13 car. Find the pie chart angle for (a) walk (b) bus (c) cycle (d) car.
19.
(a) Goals scored in 5 matches: 15, 21, 12, 16, 21. What is the mean?
(b) Goals scored in 5 matches: 23, 24, 4, 19, 14. What is the median?
20.
(a) A line graph shows trees planted each month: Jan 25, Feb 50, Mar 120, Apr 45, May 25, Jun 120. Between which two months did the line rise the most?
(b) Books read by each class (each 📗 stands for 10 books):
6A: 📗📗📗
6B: 📗📗📗
6C: 📗📗📗 and a half 📗
6E: 📗📗📗📗📗📗📗
How many books did class 6C read?
AmbifulWorksheets
Practice that never repeats
CBSE · Class 7 · Computational Thinking and AI

Answer key

Data Visualisation and Analysis · AW-7CT-DVA-2026-V1 · For parents — fold back or tear off before handing the sheet to your child.

QAnswerWorking
1(d) line graph—
2(a) a pie chart—
3(d) 10°1/36 × 360°
4(a) Feb to Marchanges: −70, +130, −25, −30, +30
5(c) 19133 ÷ 7
6(c) 16in order: 4, 14, 15, 16, 19, 20, 30; the middle one
7(a) 1919 appears 2 times
8(a) 2628 − 2
9To show how a whole is shared into parts, e.g. how a class travels to school.—
10357°119/120 × 360°
11Mar to Aprchanges: −25, +10, +70, −35, −5
1216112 ÷ 7
1317in order: 5, 8, 13, 17, 25, 29, 30; the middle one
142626 appears 2 times
152426 − 2
163Hindi: 75, 20, 70, 70
17(a) Walk 144°, bus 108°, cycle 72°, car 36°. (b) Walk. (c) 144 + 108 + 72 + 36 = 360°.—
18(a) 55°; (b) 50°; (c) 190°; (d) 65°each count ÷ 72 × 360°; they add up to 360°
19(a) 17; (b) 19(a) 85 ÷ 5; (b) in order: 4, 14, 19, 23, 24; the middle one
20(a) May to Jun; (b) 35(a) changes: +25, +70, −75, −20, +95; (b) 3 × 10 + 5