Total pets owned | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|
Number of adults | 248 | 567 | 1402 | 728 | 419 | 456 | 203 |
What is the estimated mean for the population? Explain your answer and show your work.
We can use a "weigthed average" here
The total number of pets owned =
1(248) + 2(567) + 3(1402) + 4(728) + 5(419) + 6(456) + 7(203) = 14752 (1)
And the total nuber of adults = 248 + 567 + 1402 + 728 + 419 + 456 + 203 = 4023 (2)
So...the average (mean) is (1) / (2) = 14752 / 4023 ≈ 3.66 pets