
| Did you ever want to be a detective? To gather information
about a puzzle and then infer the missing pieces? In some respects, a career
in survey research is like being a numerical detective. As Cervantes wrote
in Don Quixote, "By a small sample we may judge of the whole piece." A
survey statistician designs samples that can be used to make inferences
about the "whole piece."
Being a survey statistician involves much more than calling people and asking who they plan to vote for in the next election. Here are some areas in which surveys are used, and some of the problems that a survey statistician might work on:
Many U.S. government agencies conduct surveys to collect data used in public policy decisions. The best known of these is the decennial Census of Population, conducted by the U.S. Census Bureau. Other large-scale surveys include the Current Population Survey, which collects data on employment, unemployment, earnings, and other labor market topics; the National Crime Victimization Survey, which measures crime against individuals; and the National Health Interview Survey, which collects information on the amount and effects of illness and disability. A survey statistician might study: Social research depends heavily on surveys, which can provide a snapshot or moving picture of social trends. In many instances, the only way to obtain information about behavior or opinions is to ask a representative sample of people. Political polls fall in this category. A survey statistician might study: Educational research and improvement of the educational system requires that performance and subsequent development be measured. A survey statistician might study: Survey research is commonly used in the legal arena. In trademark cases, consumers of a product may be surveyed and asked whether a trademark is associated with a certain brand even when the company's name is missing. Surveys may also be used by attorneys to help with jury selection in high-profile cases. Surveys are crucial for estimating agricultural production, and many commonly-used sampling designs were developed for agricultural surveys. How do we estimate the number of caribou in a region? How many mosquitoes in New York are estimated to carry West Nile virus? A survey statistician might study: The National Health Interview Survey mentioned above is just one of the surveys conducted by the Centers for Disease Control to monitor public health. State governments and medical researchers conduct numerous surveys to estimate prevalence of disease and costs to society. A survey statistician might study: Market research commonly relies on surveys and focus groups. Economic surveys such as those conducted by the Bureau of Labor Statistics may be used in making business decisions. The internet has the potential to become a widespread medium for conducting surveys. (After all, you're reading this page, aren't you?) To date, however, most surveys have been of the "click here for yes, click there for no" variety, and the fact that web viewers decide whether or not to respond makes these surveys unreliable. How can the internet be used to conduct reliable, statistically valid surveys? |