Exam 11: Sampling: Design and Procedures

________ is a probability sampling technique in which each element in the population has a known and equal probability of selection.Every element is selected independently of every other element and the sample is drawn by a random procedure from a sampling frame.

The researcher has the ethical obligation to protect the identities of the respondents,even if it means limiting the level of sampling detail that is reported to the client and other parties.

The basic unit containing the elements of the population to be sampled is the ________.

________ is a sampling technique in which an element cannot be included in the sample more than once.

A complete enumeration of the elements of a population or study objects is a ________.

Sampling efficiency is a concept that reflects a tradeoff between sampling cost and precision.

A subgroup of the elements of the population selected for participation in the study is a ________.

________ is a probability sampling technique in which the sample is chosen by selecting a random starting point and then picking every ith element in succession from the sampling frame.

The elements within a stratum should be as heterogeneous as possible,but the elements in different strata should be as homogeneous as possible.

The larger the sample,the greater the gain in precision by increasing the sample size by one unit.

Sampling techniques and procedures vary in accuracy,reliability,and cost from country to country.

Which statement is not true about judgmental sampling?

If the sampling unit is different from the element,it is necessary to specify precisely how the elements within the sampling unit should be selected.Selecting the person within the sampling unit with the next birthday is an appropriate way to precisely specify which element to sample.

Probability sampling is used to select the initial respondents for snowball sampling.

A common form of cluster sampling is area sampling,in which the clusters consist of geographic areas such as counties,housing tracts,or blocks.

________ attempts to obtain a sample of convenient elements.The selection of sampling units is left primarily to the interviewer.

All of the factors listed below favor the use of probability sampling except (Table 11.5 in the text)________.

The number of strata to use is a matter of judgment,but experience suggests the use of no more than eight.

When is it meaningful to sample potential respondents who are surfing the Internet?

If the researcher is concerned about the number of variables,the nature of the analysis,and completion rates,then,he/she is at which stage of the sampling design process (Figure 11.1 in the text)?