## Lesson: Sampling Techniques

Introducing the Concept

The idea of selecting a sample that is representative of the population may be a new topic for your students. They will need to learn what a sample is and what makes a sample representative of a population.

**Materials:** posterboard

**Preparation:** Make a poster with the following information on it.

Sample 1Since there are 1,000 voters in the school district, the school administration will call the parents of 100 of the students in the school and ask the parents if they support the building of an addition to the school.

Sample 2The school administration will get a list of the 1,000 registered voters in the school district and randomly select 100 of them to ask whether they support building an addition to the school.

Sample 3The school administration will get a list of 1,000 voters and select 15 of them to see if they support the building of an addition to the school.