Completing a frequency tree
Completing a frequency tree.
- A frequency tree records counts, not probabilities.
- The counts leaving a branch point add to the count arriving there.
- For a probability, divide the relevant final count by the correct total.
Example 1
The tree records 24 pupils. Complete the missing frequencies.
Example 2
The tree records 26 pupils. Complete the missing frequencies.
Your turn
The tree records 28 pupils. Complete the missing frequencies.
Check answer
The tree records 31 pupils. Complete the missing frequencies.
Check answer
The tree records 33 pupils. Complete the missing frequencies.
Check answer
The tree records 36 pupils. Complete the missing frequencies.
Check answer
The tree records 39 pupils. Complete the missing frequencies.
Check answer
The tree records 28 pupils. Complete the missing frequencies.
AnswerThe tree records 31 pupils. Complete the missing frequencies.
AnswerThe tree records 33 pupils. Complete the missing frequencies.
AnswerThe tree records 36 pupils. Complete the missing frequencies.
AnswerThe tree records 39 pupils. Complete the missing frequencies.
Answer