Answer
Foxx Vix is one of the leading marketing research firms in Boston. It manufactures a TV ratings product, a device to know the TV shows watched. It is installed to a random sample of 800 families nationally through random sampling. It replaced the traditional method of asking households about their television show preferences.
Work Step by Step
Data gathered electronically is always a more reliable and accurate source than individually asking each household. Thus, there are less chances of the information being biased.