Class 5 · Topic 9
Data Handling
Step 1 · Learn
Read the ideas
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Pictographs & Bar Graphs
More? Subtract. Total? Add all bars.
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Line Graphs
Up = increase · Down = decrease · Flat = steady.
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Pie Charts
Full circle = 360° = 100% = the total.
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Frequency & Class-Interval Tables
Frequency = how often. Sum all = total items.
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Mean (Average)
Back-solve: sum = mean × count.
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Mode & Median
Mean = sum ÷ count. Use the right tool.
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Range & Multi-Step Data Problems
Sort first → mean · median · mode · range.
Step 2 · Practice
Try the quests
Step 3 · Boss Battle
Beat the boss
🛡️ 🛡️ 🛡️ 3 shields — lose all → 60-second cooldown
Round 1
A bar graph shows tickets sold: Mon 45, Tue…
🔒Round 2
A line graph shows a patient's temperature:…
🔒Round 3
A pie chart of 540 votes gives Blue 120°,…
🔒Round 4
A class-interval table of masses reads: 20…
🔒Round 5
A batsman's mean score over 8 innings is…
🔒Round 6
Eight pupils scored 11, 8, 15, 6, 9, 12, 8…
🔒Round 7
A bar graph shows goals in five matches: 3,…
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