researching ways in which a survey can be done that may bias the results 1

researching ways in which a survey can be done that may bias the results. For each method of conducting a biased survey, explain it in your own words AND give an example. You may earn two points of extra credit for each method for a total of up to 10 points for five distinctly different methods.

NOTE: Only one of these methods can deal with sampling techniques. Also, you must cite your reference(s).