a librarian wants to determine how often local families use the librarys tutoring service. he asks several…

a librarian wants to determine how often local families use the librarys tutoring service. he asks several volunteers to randomly survey people at the library about the number of times their family used the service in the past month. here are the data for one volunteer: 20 4 0 2 0 0 3 16 0 10 what is the mean number of times families in this survey used the service?

a librarian wants to determine how often local families use the librarys tutoring service. he asks several volunteers to randomly survey people at the library about the number of times their family used the service in the past month. here are the data for one volunteer: 20 4 0 2 0 0 3 16 0 10 what is the mean number of times families in this survey used the service?

Answer

Explanation:

Step1: Find the sum of data

$20 + 4+0 + 2+0 + 0+3 + 16+0 + 10=55$

Step2: Find the number of data - points

There are 10 data - points.

Step3: Calculate the mean

The mean $\bar{x}=\frac{\text{Sum of data}}{\text{Number of data - points}}=\frac{55}{10} = 5.5$

Answer:

$5.5$