Question

Erica wanted to conduct a survey to find the most popular ice cream flavor sold at the local ice cream shop. She decided to survey all the girls present in the shop. Is this sample representative of the population?

A. Yes, it asks all the girls present in the shop
B. Yes, the sample is restricted within the shop
C. No, the sample is only about ice cream flavors
D. No, it asks only the girls in the shop

Answer 1

Answer: D. No, it asks only the girls in the shop

Erica's survey leaves out the boys which means the boys are completely under-represented while the girls are over-represented. The population consists of boys and girls. This means the sample needs to have the same proportional mix of those genders (ie around 50% for each) if you want the sample to be representative of the population.

Answer 2

D

Explanation: