By Seymour Sudman
Though many researchers operating with survey study tools are conscious that robust sampling concepts can be found, it seems that they steer clear of them simply because they think those strategies are too tough or too expensive to exploit. as a substitute, careless advert hoc approaches are frequently applied, now and then with disastrous effects. utilized SAMPLING represents an important departure from the various solid books on sampling which think refined statistical wisdom or wide assets. the amount, which abounds in useful examples of the type that researchers most often stumble upon of their paintings, is meant for the very huge majority of survey clients who've basically restricted statistical backgrounds and assets yet who desire to maximize the usefulness of the information they receive. the writer conscientiously outlines a huge array of quite basic systems which are less pricey than, and fairly equivalent to, the main unique equipment now in present use.
APPLIED SAMPLING could be a useful sensible asset to all clients of survey study equipment - sociologists, marketplace researchers, academic researchers, application evaluators, and scholars of those topics.
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Extra info for Applied Sampling
While slightly less convincing than the results in six locations, these results are far better than if only one city had been used. Note also that this research was intended to disconfirm a theory, so fewer locations were needed. Discussion o f Limitations 5. There is a discussion of the differences between the two sites and the general effects of city and region. Use o f Special Populations 5. It is a general population sample with the head of the household interviewed. Sample Size 5. The size is clearly adequate.
The refutation of study findings must come from other studies with greater credibility. 2 A CR ED IB ILITY SCALE To formalize the notion of credibility and organize the discussion in this chapter, a credibility scale has been developed for judging small-scale samples. The credibility scale includes the factors that samplers would generally consider in looking at a sample: the generalizability of the findings, sample size, the execution of the sample design, and the use of the available resources.
To do a careful study of Texas or California or the Chicago and New York metropolitan areas requires the same procedures as selecting a national sample of the United States. The cost of a local sample may be less, primarily because travel costs are lower in any geographically limited area. Many local and state samples will be smaller than national studies because the national policy decisions involve far greater risks in the allocation of government spending, but this is not always the case. Important state problems for larger states like New York or California may require larger sample studies than less sensitive national studies that are more research oriented.