When people refuse to complete a survey, it is a problem because ...

[Themember4]

When people refuse to complete a survey, it is a problem because _____.
 
  a. the researcher has to find somebody else to complete the items left blank
  b. the researcher will probably dislike the individuals who quit
  c. termination is likely to be random
  d. termination is likely to be systematic

Question 2

To avoid unknown, systematic factors that may bias the results of an experiment, the experimenter should select a _________ sample from a population and use controlled conditions.
 
  a. wise c. random
  b. small d. single

[hramirez205]

Answer to Question 1

D
Termination is likely to be ore common among certain groups in the population. If they are eliminated in large numbers, the sample will not represent the population.

Answer to Question 2

C