Handling Data 3
1 mark · EasyIn a group, everyone has either 1, 2 or 3 pets. The mean number of pets per person is 2.
Explain, in one sentence, what this tells you about the group.
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The total number of pets divided by the number of people is 2.
Also accept: It means the average is 2 pets per person.; On average each person has 2 pets.
Common mistakes: Saying everyone has exactly 2 pets
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Marking points
B1 · 1 mark · Correct explanation: indicates what the mean shows, not that every person has 2 pets.
Worked solution
The mean tells us that, overall, the total number of pets divided by the group size is 2, but not that everyone has exactly 2 pets.