Question

Use critical thinking to address the key issue. You plan to conduct a survey to find the percentage of people in your state who can name the Lieutenant Governor, who plans to run for the United States Senate. You obtain addresses from telephone directories and you mail a survey to 850 randomly selected people. What is wrong with using the telephone directory as the source of survey subjects?

Answer 1

Undercoverage

Explanation:

using the telephone directory as the source of survey subject could lead to undercoverage because the sole reason for carrying out a survey is to select a sample that represent the whole populace not a sample that represent those that have telephone.

undercoverage will be a constraint because people without a telephone or people with telephone number not on the telephone directory were not observe in the sample frame and could lead to confounding.