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Data Handling — Chapter Test

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Q1
Two full tally groups and 2 more lines stand for ___ ?
5 + 5 + 2 = 12.
Q2
Which is the odd one out (three are ways to show data)?
A cuboid is a solid shape; the others show data.
Q3
Counting tally groups: 5, 10, 15, 20 — these go up by ___ ?
Each full group adds 5.
Q4
If 1 unit on a graph stands for 10, then 5 units stand for ___ ?
5 × 10 = 50.
Q5
One full tally group and 4 more lines stand for ___ ?
5 + 4 = 9.
Q6
On a bar graph with scale 10, a bar reaches 4 units. What value is that?
4 × 10 = 40.
Q7
What is the mode of 1, 2, 2, 3, 2, 5?
2 appears three times, more than any other, so the mode is 2.
Q8
On a graph with scale 5, a bar that reaches 6 units stands for ___ ?
6 × 5 = 30.
Q9
A frequency table shows apples 8 and oranges 5. How many more apples than oranges?
8 − 5 = 3 more apples.
Q10
Favourite sports: cricket 20, football 15, hockey 5. Which is the most popular?
Cricket has the highest count (20).
Q11
Favourite sports: cricket 20, football 15, hockey 5. How many children in all?
20 + 15 + 5 = 40 children.
Q12
On a graph with scale 10, a bar stands for 50. How many units tall is the bar?
50 ÷ 10 = 5 units.
Q13
What is the mode of 4, 7, 4, 9, 4, 7?
4 appears three times, more than 7 (twice) or 9 (once), so the mode is 4.
Q14
On a bar graph with scale 20, the tallest bar is 3 units and the shortest is 1 unit. What is the difference in value?
Tallest = 60, shortest = 20, so 60 − 20 = 40.
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