Exam 12: Sampling Designs and Sampling Procedures

When a nonprobability sample is used,there are no appropriate statistical techniques for measurement of random sampling error.

A marketing vice-president tells the marketing department to schedule a test market in Dallas because he feels that this city is "typical" of the composition of the target market for a new product nationally.The vice president is asking for a(n)____.

A sampling procedure that assures each element in the population of an equal chance of being included in the sample is called ____.

The difference between the results of a sample and the results of a census that is conducted with identical procedures is called ____________________ error.

Sampling involves using a small number of people in the target market to make conclusions about the entire target market population.

If Northwest Airlines selects randomly a set of 40 flights on a given day,and then selects randomly a group of ten passengers on each of these flights to participate in an in-flight survey,the passengers are best referred to as a ____.

The most popular type of cluster sample is the area sample.

When a research study has been poorly designed,it is likely to be affected by ____________________ error.

A census is any complete group whose members share some common set of characteristics.

Explain reasons for why taking a sample might be preferred to taking a complete census.

Trickle-down sampling involves using probability methods for an initial selection of respondents and then obtaining additional respondents through information provided by the initial respondents.

A researcher is interested in studying attitudes about raw milk sales and has reason to believe that urban,suburban,and rural groups will vary in their responses.The researcher knows that the population being studied is 50% urban,40% suburban,and 20% rural.She classifies the potential participants as urban,suburban,or rural residents,and then,for a sample totaling 100,randomly selects 50 individuals from the urban group,40 from the suburban group,and 20 from the rural group.The researcher is using a(n)____.

A researcher for Procter & Gamble selects five states randomly,and then selects 10 supermarket chains within each of these states to call for a phone survey for a test market of a new shampoo.Which type of sampling procedure is being used?

Writing the names of the students in a class on separate sheets of paper,shuffling the papers thoroughly,and then drawing five names "out of a hat," is a type of ____________________ sample.

Which type of error occurs when potential respondents are improperly excluded before the sample is taken?