1. Averages: Mean from a Frequency Table
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Teacher
Intelligent Practice
Narration
Your Turn
Number of pets
Frequency 10 1 5 2 3
Example
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2. Worked Example
Your Turn
Calculate the mean number of siblings
Calculate the mean number of siblings
Number of siblings
Frequency 2 1 3 4
Number of siblings
Frequency 4 1 6 2 3
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3. 2 1 5 3 1 2 20 3 1 2 3 Number of pets Frequency Number of pets2 1 3
Number of pets
Frequency 5 1 2 3
Number of pets
Frequency 20 1 2 3

4. 1 20 2 3 1 10 2 3 1 2 10 3 Number of pets Frequency Number of pets1 20 2 3
Number of pets
Frequency 1 10 2 3
Number of pets
Frequency 1 2 10 3

5. 1 5 2 3 10 10 1 5 2 3 10 1 5 2 3 Number of pets Frequency1 5 2 3 10
Number of pets
Frequency 10 1 5 2 3
Number of pets
Frequency 10 1 5 2 3

6. 2 1 Mean = 1.5 5 3 1 2 20 3 1 Mean = 1.5 2 3 Mean = 0 Number of pets
Frequency 2 1 3
Mean = 1.5
Number of pets
Frequency 5 1 2 3
Mean = 1.5
Number of pets
Frequency 20 1 2 3
Mean = 0

7. Number of pets
Frequency 1 20 2 3
Mean = 1
Number of pets
Frequency 1 10 2 3
Mean = 1.5
Number of pets
Frequency 1 2 10 3
Mean = 2.5

8. Number of pets
Frequency 1 5 2 3 10
Mean = 2.25
Number of pets
Frequency 10 1 5 2 3
Mean = 0.75
Number of pets
Frequency 10 1 5 2 3
Mean = 0.85