Data & Graphs Quiz

1. What type of graph uses bars of different heights to compare data?

1. Bar chart
2. Line graph
3. Pie chart
4. Scatter graph

2. What does a pie chart show?

1. Changes over time
2. Frequency of data
3. Parts of a whole as sectors
4. Relationships between two variables

3. A pie chart sector represents 90°. What percentage of the total does it represent?

1. 25%
2. 33%
3. 9%
4. 90%

4. What type of graph is best for showing how something changes over time?

1. Bar chart
2. Line graph
3. Pie chart
4. Scatter graph

5. What is a frequency table?

1. A graph of related variables
2. A table showing how often each value occurs
3. A table showing speed of data collection
4. A type of pie chart

6. In a bar chart, 30 students prefer football and 20 prefer tennis. The bar for football is 6 cm tall. How tall should the tennis bar be?

1. 2 cm
2. 3 cm
3. 4 cm
4. 5 cm

7. What does a scatter graph show?

1. Changes in one value over time
2. Data split into sectors
3. Frequencies of different categories
4. The relationship between two variables

8. What does a positive correlation on a scatter graph look like?

1. A perfect horizontal line
2. Points scattered randomly
3. Points sloping downward left to right
4. Points sloping upward left to right

9. What is a tally chart used for?

1. Calculating percentages
2. Displaying final data
3. Drawing a line graph
4. Recording data as it is collected

10. In a pie chart representing 200 students, a sector for 'Science' covers 72°. How many students prefer Science?

1. 20
2. 30
3. 40
4. 72

11. What is a histogram?

1. A bar chart for continuous data with no gaps between bars
2. A bar chart with gaps between bars
3. A pictogram
4. A type of pie chart

12. What does 'negative correlation' mean?

1. As one variable increases, the other decreases
2. Both variables decrease together
3. The data is incorrect
4. There is no relationship between variables

13. A line graph shows temperatures: 5°C, 8°C, 12°C, 9°C, 6°C over 5 days. What is the range?

1. 5°C
2. 6°C
3. 7°C
4. 8°C

14. What is a pictogram?

1. A 3D bar chart
2. A graph using symbols to represent data
3. A pie chart using pictures
4. A type of scatter graph

15. In a grouped frequency table, the class interval '20 ≤ x < 30' means:

1. Values between 20 and 30 inclusive
2. Values exactly 20 or 30
3. Values from 20 up to but NOT including 30
4. Values from 21 to 29 only

16. What does the line of best fit on a scatter graph represent?

1. The exact data points
2. The highest and lowest values
3. The median value
4. The trend or average relationship between variables

17. What type of data is 'favourite colour'?

1. Categorical
2. Continuous
3. Discrete
4. Ordinal

18. Which chart is most suitable for comparing sales figures across 5 different products?

1. Bar chart
2. Line graph
3. Pie chart
4. Scatter graph

19. In a stem-and-leaf diagram, the stem '3' with leaves '2, 5, 8' represents which values?

1. 23, 53, 83
2. 3, 2, 5, 8
3. 3.2, 3.5, 3.8
4. 32, 35, 38

20. What is a dual bar chart?

1. A bar chart showing two sets of data side by side
2. A bar chart with bars split in two colours
3. A bar chart with two axes
4. Two separate bar charts on one page