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

Questions

1. 1. Key 3 | 4 means 34. What does 5 | 2 mean?

   • 5.2
   • 52
   • 25
   • 7
   Check

2. 2. 2 | 1 4 4 7. Which values are shown?

   • 12, 42, 42, 72
   • 21, 24, 27
   • 2, 1, 4, 4, 7
   • 21, 24, 24, 27
   Check

3. 3. What is the mode of the data in the stem-and-leaf diagram?

   • 21
   • 4
   • 24
   • 27
   Check

4. 4. What is the range of the data in the stem-and-leaf diagram?

   • 26
   • 8
   • 16
   • 6
   Check

5. 5. What is the median of the data in the stem-and-leaf diagram?

   • 25
   • 15
   • 23
   • 20
   Check

6. 6. Why must a stem-and-leaf diagram have a key?

   • to show colours
   • it doesn't need one
   • to look nice
   • to show what the stems and leaves mean
   Check

7. 7. Key 4 | 7 means 4.7. What does 6 | 0 mean?

   • 60
   • 0.6
   • 0.06
   • 6.0
   Check

8. 8. Leaves should be written …

   • in any order
   • largest first
   • in pairs
   • in order from smallest
   Check

9. 9. How many values does the stem-and-leaf diagram show?

   • 30
   • 6
   • 3
   • 5
   Check

10. 10. One advantage of a stem-and-leaf diagram is …

    • it keeps all the original values
    • it needs no key
    • it shows percentages
    • it hides data
    Check

11. 11. Back-to-back stem-and-leaf diagrams are used to …

    • find percentages
    • compare two data sets
    • draw pie charts
    • show one set twice
    Check

12. 12. Data 45, 47, 52, 58, 61. Stems?

    • 40, 50, 60
    • 4, 5, 6
    • 5, 7, 2, 8, 1
    • 45, 52, 61
    Check

13. 13. What is the mode of the data in the stem-and-leaf diagram?

    • 58
    • 56
    • 53
    • 3
    Check

14. 14. Key 1 | 5 means 15. Values 1 | 5 8, 2 | 2. Mean?

    • 18.33…
    • 18
    • 15
    • 55
    Check