Data Handling and Presentation — Quiz

Q1. In a pictograph the key is '▲ = 10 children'. For 'Sometimes', there are 2 complete triangles and 1 half-triangle. How many children does this represent?

• A. 12
• B. 20
• C. 30
• D. 25

Q2. On a bar graph of Imran's family expenditure, the scale is 1 unit length = Rs 200. House rent is Rs 3000. The height of the bar for house rent will be

• A. 10 units
• B. 30 units
• C. 20 units
• D. 15 units

Q3. A pictograph shows the number of girls in classes of a school with key '👧 = 4 girls'. Class 1 has 6 full symbols and Class 4 has 3 full symbols and 1 half-symbol. How many more girls are there in Class 1 than in Class 4?

• A. 3
• B. 8
• C. 14
• D. 10

Q4. A bar graph showing absent students in 8 classes has bar heights 3, 5, 4, 2, 0, 1, 5, 7 for classes I to VIII. In which class were the maximum students absent?

• A. Class II
• B. Class III
• C. Class VII
• D. Class VIII

Q5. On a bar graph with the scale '1 unit length = 1 student', the bar for Class 2 reaches the mark labelled 5. How many students were absent in Class 2?

• A. 1
• B. 2
• C. 10
• D. 5

Q6. Jarina is making a pictograph of students present in 8 classes, with totals like 30, 35, 25 etc. If she uses '☺ = 1 student', the main challenge is

• A. she will run out of paper or it will take too long
• B. the data cannot be shown by any pictograph
• C. she must use a bar graph instead
• D. the pictograph will be more accurate than the data itself

Q7. Magan Bhai sells kites. Rani bought 300 kites. In a pictograph with key '◇ = 100 kites', how many symbols will represent Rani's kites?

• A. 1 symbol
• B. 300 symbols
• C. 30 symbols
• D. 3 symbols

Q8. Smriti's runs in 8 matches range from 0 to 100. For a neat bar graph, which scale is most suitable?

• A. 1 unit length = 1 run
• B. 1 unit length = 10 runs
• C. 1 unit length = 100 runs
• D. 1 unit length = 1000 runs

Q9. Faiz's frequency table shows wickets taken by Bumrah in 30 matches: 0→2, 1→4, 2→6, 3→8, 4→3, 5→5, 6→1, 7→1. In how many matches did Bumrah take exactly 4 wickets?

• A. 3
• B. 4
• C. 8
• D. 30

Q10. On a population bar graph, 1 unit length = 10 crore. India's population in 1981 is shown as a bar of about 6.8 units. The population that year was approximately

• A. 6.8 crore
• B. 680 crore
• C. 108 crore
• D. 68 crore

Q11. Which type of bar graph is most natural for showing the lengths of the longest rivers of each continent?

• A. vertical bars (column graph)
• B. horizontal bars
• C. a pictograph with stick figures
• D. a stack of triangles

Q12. A pictograph of books borrowed in a week (📖 = 1 book) shows: Mon 5, Tue 4, Wed 2, Thu 0, Fri 5, Sat 8. On which day were the minimum books borrowed?

• A. Wednesday
• B. Thursday
• C. Friday
• D. Monday

Q13. Navya wrote down each classmate's favourite game in a long list. She still cannot tell at a glance which game is the most popular. The main reason is

• A. the list has too few entries to draw conclusions
• B. raw unorganised data does not show how often each item appears
• C. she has not used colour in her list
• D. favourite games cannot be compared at all

Q14. A bar graph of vehicles passing a Delhi crossing each hour shows the longest bar at 7–8 a.m. (1200 vehicles) and the next at 8–9 a.m. (1000 vehicles). The total vehicles between 7 a.m. and 9 a.m. were

• A. 1100
• B. 2000
• C. 2200
• D. 12000

Q15. A Class 6 teacher wants students to learn how to handle data through a hands-on activity. The best first step is to

• A. draw a finished bar graph on the board and ask students to copy it
• B. ask students to guess the most popular colour or game in the class, then collect the data and check
• C. give students a printed pictograph and ask them to count symbols
• D. lecture on the definition of data, frequency and scale