Read the Math Notes box in this lesson. For each question, describe the population of interest. Then state whether a census is practical or whether it makes more sense to take a sample. Justify your response.

1. What is the average time it takes U.S. employees to commute to work?

   Answer (a):

   Population: U.S. employees. The population is too large to conveniently measure so sampling should be used.

2. What is the average bedtime for students in your math class?

   Answer (b):

   Population: students in the class. A census can be taken.

3. How much Vitamin A is in an average carrot?

4. What is the public approval rating of the Governor?

5. How much weight can an elevator cable support?

6. What are your friends’ favorite movies?