Math: Middle School: Grades 6, 7 and 8 Quiz - Data Handling - Quantitative Data (Questions)

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There are two types of numerical data; countable (discrete) and measurable (continuous). In the subject of data handling, you need to recognize and know how to deal with these types of quantitative data.

Try the following math quiz on the subject.

1. If data can only take certain numerical values it is called discrete. Which of these types of data is discrete?
[ ] The color of an apple
[ ] The number of pips in an apple
[ ] The volume (in cm3) of an apple
[ ] The weight (in g) of an apple
2. If data can be measured against a scale it is called continuous. Which of these types of data is continuous?
[ ] The beds in wards of a town's hospital
[ ] The heights of buildings in a town
[ ] The names of roads in a town
[ ] The number of pupils in a town's schools
3. Adults responding to a survey are asked to choose their age group from these: 18-25, 25-40, 40-60, over 60. What is wrong with this choice?
[ ] No ages below 18
[ ] Age group intervals are all different
[ ] Intervals overlap
[ ] 'Over 60' is too vague
4. Which of these can be read from a grouped frequency table of children's heights (h cm) recorded in 10cm intervals?
[ ] Heights of individual children
[ ] The height range
[ ] The median height
[ ] The modal height interval
5. The frequency recorded in the interval 130 < h ≤ 140 is 5. This means that five children are .......
[ ] at least 130cm tall
[ ] less than 140cm tall
[ ] 135cm tall
[ ] over 130cm and up to 140cm tall
6. Which of these intervals would include a height of 130cm?
[ ] 125 ≤ h < 130
[ ] 130 < h ≤ 140
[ ] 120 < h ≤ 130
[ ] h >130
7. The contents of seed packets are recorded to the nearest 10. A pack with 43 seeds is recorded as having .......
[ ] 30 seeds
[ ] 35 seeds
[ ] 40 seeds
[ ] 45 seeds
8. A packet of 50 seeds (to the nearest 10) will contain at least .......
[ ] 44 seeds
[ ] 45 seeds
[ ] 54 seeds
[ ] 55 seeds
9. The contents of 20 packets of seeds (to the nearest 10) are: 5 x 30, 9 x 40, 5 x 50, 1 x 60. What is the best estimate for the total number of seeds in these packs?
[ ] 630
[ ] 750
[ ] 820
[ ] 940
10. The contents of 20 packets of seeds (to the nearest 10) are: 5 x 30, 9 x 40, 5 x 50, 1 x 60. What is the best estimate for the mean (average) contents of these seed packets?
[ ] 41
[ ] 42
[ ] 43
[ ] 44
Math: Middle School: Grades 6, 7 and 8 Quiz - Data Handling - Quantitative Data (Answers)
1. If data can only take certain numerical values it is called discrete. Which of these types of data is discrete?
[ ] The color of an apple
[x] The number of pips in an apple
[ ] The volume (in cm3) of an apple
[ ] The weight (in g) of an apple
An apple only has half a pip if it's been cut in half
2. If data can be measured against a scale it is called continuous. Which of these types of data is continuous?
[ ] The beds in wards of a town's hospital
[x] The heights of buildings in a town
[ ] The names of roads in a town
[ ] The number of pupils in a town's schools
Height can be measured against a continuous scale
3. Adults responding to a survey are asked to choose their age group from these: 18-25, 25-40, 40-60, over 60. What is wrong with this choice?
[ ] No ages below 18
[ ] Age group intervals are all different
[x] Intervals overlap
[ ] 'Over 60' is too vague
Adults are 18 or over. Someone aged 25 or 40 wouldn't know which box to tick
4. Which of these can be read from a grouped frequency table of children's heights (h cm) recorded in 10cm intervals?
[ ] Heights of individual children
[ ] The height range
[ ] The median height
[x] The modal height interval
5. The frequency recorded in the interval 130 < h ≤ 140 is 5. This means that five children are .......
[ ] at least 130cm tall
[ ] less than 140cm tall
[ ] 135cm tall
[x] over 130cm and up to 140cm tall
6. Which of these intervals would include a height of 130cm?
[ ] 125 ≤ h < 130
[ ] 130 < h ≤ 140
[x] 120 < h ≤ 130
[ ] h >130
The sign ¡Ü means 'less than or equal to'
7. The contents of seed packets are recorded to the nearest 10. A pack with 43 seeds is recorded as having .......
[ ] 30 seeds
[ ] 35 seeds
[x] 40 seeds
[ ] 45 seeds
8. A packet of 50 seeds (to the nearest 10) will contain at least .......
[ ] 44 seeds
[x] 45 seeds
[ ] 54 seeds
[ ] 55 seeds
9. The contents of 20 packets of seeds (to the nearest 10) are: 5 x 30, 9 x 40, 5 x 50, 1 x 60. What is the best estimate for the total number of seeds in these packs?
[ ] 630
[ ] 750
[x] 820
[ ] 940
(5 x 30) + (9 x 40) + (5 x 50) + (1 x 60)
10. The contents of 20 packets of seeds (to the nearest 10) are: 5 x 30, 9 x 40, 5 x 50, 1 x 60. What is the best estimate for the mean (average) contents of these seed packets?
[x] 41
[ ] 42
[ ] 43
[ ] 44
820 / 20 = 41