Answer:
5.5
Step-by-step explanation:
The mean number of times families in this survey used the service can be calculated by adding up all the numbers and then dividing by the total count of numbers.
Adding up the numbers:
20 + 4 + 0 + 2 + 0 + 0 + 3 + 16 + 0 + 10 = 55
There are 10 numbers in the survey data.
Now, to find the mean:
Mean = Total sum of numbers / Total count of numbers
Mean = 55 / 10
Mean = 5.5
Therefore, the mean number of times families in this survey used the service is 5.5.
