Lesson: Biased versus Unbiased Samples Mathematics • 7th Grade
In this lesson, we will learn how to determine whether a sample is biased or unbiased.
An animal rescue center wants to find out if people in its town think more money should be spent on animal welfare. They plan to ask a random sample of their visitors and volunteers to fill in a questionnaire. Why would their sample not be representative of the town’s population?
The Egyptian government wishes to conduct a survey about the Egyptian people’s satisfaction with the government plan. Which of the following is an unbiased sample?
A student wants to research how much allowance the students in his middle school receive. Which of the following would be the best way to get a representative sample of the population?