Briefly describe the differences in mail, telephone, and personal ...

[ENagel]

Briefly describe the differences in mail, telephone, and personal interview surveys. In addition, note advantages and disadvantages of each method.
 
  What will be an ideal response?

Question 2

Which statement is the best example of a hypothesis?
 
  a. There is no relationship between fatigue and reaction time.
  b. Sugar consumption is not related to level of activity.
 c. Smaller class size is related to better academic performance.
  d. Self-esteem does not affect persistence on a difficult task.

[wshriver]

Answer to Question 1

A mail survey is a written survey that is self-administered. It has the concerns of a sampling bias and poor return rate; however, participants might answer more truthfully because interviewer bias is lessened. A telephone survey is a survey conducted by telephone in which the questions are read to the respondents. It has the concerns of interviewer bias, sampling bias, socially desirable responses, expense, and sometimes of return rate. This method allows the respondents to ask for question clarification. Lastly, a personal interview is a face-to-face interview of the respondent. It has the concerns of interviewer bias, socially desirable responses, and expense. It allows the respondents to ask for question clarification.

Answer to Question 2

c