Mrs. Liang, the librarian, wants to compare the numbers of patrons who prefer e-books to paperback books. She decides to take a poll of every third adult with a child who arrives at the library for one of the four reading groups: toddlers, preschoolers, primary grades, and upper elementary. Which statement is true about her method of data collection?
Answer
A
It is balanced because she is polling four different reading groups, which include all types of people.
B
It is balanced because she is including parents with children of all ages so she will get a greater age range.
C
It is not balanced because she only surveyed the adults and not the young children.
D
It is not balanced because it is less likely to include teens, young adults, and senior citizens in the patron population.