5.13 Quick review questions

  1. Suppose we randomly select a student and send them a postal survey, but the student has moved address and so never receives the survey. What type of bias will this result in?
  2. What is the main advantage of using a random sample?
  3. What is the main advantage of using a large sample?
  4. A large sample is always better than a random sample: True or false?
  5. Suppose I classify a natural forest region into two zones, which are quite different: Region A is mostly dunes and lightly vegetated, and is on the coastal side of a ridge; Region B is more densely vegetated and on the inland side of the ridge. I then take samples of sugar ants (Camponotus app) from each zone to study their size. What is the best description of the type of sampling method being used?