Question: Business professor Thomas Callarman traveled to China more than a dozen times from 2000 to 2005. He warns people about believing everything they read about surveys conducted in China and gives two specific reasons. Callarman stated, First, things are changing so rapidly that what you hear today may not be true tomorrow. Second, the people who answer the surveys may tell you what they think you want to hear, rather than what they really believe (T. E. Callarman, Some Thoughts on China, Decision Line, March, 2006, pp. 1, 43 44).
a. List the four types (or categories) of survey error discussed in this section.
b. Which categories best describe the types of survey error discussed by Professor Callarman?