Chapter 9: Data Handling

Questions

1. Range of $12, 25, 18, 45, 30$.
2. Mode of $10, 20, 20, 30, 40, 20$.
3. If $1$ symbol $= 100$ books and a shelf has $4$ symbols, how many books?
4. Frequency: tally marks $||||$ (5 marks) means?
5. Mean of $4, 8, 6, 10, 12$.
6. Mode of $2, 3, 4, 4, 5, 4, 6$.
7. Draw pictograph: choose scale of $1$ symbol = $5$ items for count $25$: how many symbols?
8. Range of $12, 25, 18, 45, 30$.
9. Number of observations if sum is $60$ and mean is $10$.
10. In a bar graph, what does the height of a bar represent?

Extra Practice (Optional)

• Draw a bar graph for scores $3,5,7,6,4$.
• Difference between raw data and organised data?
• Median of $4, 5, 6, 7, 8$.