1. Unit 4: Political Beliefs & Ideologies
Lecture & Discussion 3: Measuring Public Opinion

2. Enduring Understanding
Public opinion is measured through scientific polling, and the results of polls influence public policies and institutions.

3. Objective(s)
To describe the elements of a scientific poll and explain the quality and credibility of claims based on public opinion data.

4. Do Now
Watch the Khan Academy videos “Measuring Public Opinion” and “Scientific Polling” to respond to the prompts and define the terms.

5. Measuring Public Opinion
What is public opinion?
mass surveys:
benchmark polls:
tracking polls:
entrance & exit polls:

6. Scientific Polling What makes a poll credible? random sample:
sampling error: