Problem
a) What's an unrepresentative sample, and what are its consequences for findings and analysis? Provide an example of an unrepresentative sample regarding households in Miami's Little Haiti.
b) What have been sampling problems in political polling for U.S. presidential elections? What have been their consequences for election result predictions?
c) What have been sampling problems in mobile market research?
d) How can a sample of just 1,000 persons yield meaningful results about the entire U.S. population?