Math 8 · Unit 16: Interpreting and discussing results · Cambridge Lower Secondary Maths Stage 8

Questions

1. 1. Best diagram for heights of 100 students?

   • frequency diagram
   • pie chart
   • Venn diagram
   • scatter graph
   Check

2. 2. Best diagram for favourite fruit of a class?

   • line graph
   • bar chart
   • scatter graph
   • stem-and-leaf
   Check

3. 3. Best diagram to show if height and arm span are related?

   • time series
   • bar chart
   • scatter graph
   • pie chart
   Check

4. 4. Best diagram for monthly sales over 2 years?

   • time series graph
   • Venn diagram
   • scatter graph
   • pie chart
   Check

5. 5. Best diagram to show how a budget is split?

   • scatter graph
   • line graph
   • frequency polygon
   • pie chart
   Check

6. 6. A bar chart's vertical axis starts at 90 instead of 0. Why is this misleading?

   • it makes all bars equal
   • it isn't misleading
   • it exaggerates differences between bars
   • it hides the bars
   Check

7. 7. Best diagram for 15 test scores while keeping exact values?

   • pie chart
   • stem-and-leaf diagram
   • Venn diagram
   • frequency diagram
   Check

8. 8. Which makes a graph misleading?

   • labelled axes
   • a clear title
   • an uneven scale on an axis
   • a key
   Check

9. 9. Comparing boys' and girls' favourite sports: which is best?

   • dual (compound) bar chart
   • stem-and-leaf
   • single pie chart
   • scatter graph
   Check

10. 10. Best way to show two overlapping sets, e.g. who plays piano and guitar?

    • pie chart
    • line graph
    • scatter graph
    • Venn diagram
    Check

11. 11. A pie chart with 3D tilt can be misleading because …

    • it shows time
    • front sectors look bigger
    • it's always accurate
    • it has no angles
    Check

12. 12. What should every chart have?

    • 3D effects
    • many colours
    • a title and labels
    • no scale
    Check

13. 13. Best diagram for the number of goals per match over a season (counts like 0, 1, 2, 3)?

    • bar chart
    • frequency polygon of continuous data
    • pie chart
    • scatter graph
    Check

14. 14. A pictogram uses icons of different sizes for the same value. This is …

    • misleading
    • required
    • more accurate
    • fair
    Check

15. 15. Which question is a scatter graph best for?

    • What share of cars are red?
    • How many cars were sold each month?
    • Do older cars cost less?
    • What is the most common car colour?
    Check