Question

Mollie wants to know which type of book is most commonly checked out by visitors of herlocal public library. She surveys people in the children’s reading room between 1:00 and 2:00 on a Saturday afternoon. Is Mollie’s sample ​representative​ of the population? (6.1)

a.) Yes, Mollie’s sample is representative because she went on a Saturday afternoon.
b.) Yes, Mollie’s sample is representative because she only asks people in the children’s section
of the library.
c.) No, Mollie’s sample is not representative because she went on a Saturday afternoon.
d.) No, Mollie’s sample is not representative because she only asks people in the children’s
section of the library.

Answer 1

It’s d, only going on Saturday afternoon would mean it doesn’t represent the majority of the population, so a is out, as well as b because the children aren’t the only population; there are adults at the library. Lastly, although the c could be an option, Saturday afternoon doesn’t have as much of an impact as only asking children so d is the best option.