Exam 14: Sampling and Simulation

The _______________ method is a simulation technique using random numbers.

The PAC-10 Conference consists of ten schools. A researcher wants to study and compare the attitudes of the private and public university students within the PAC-10. He wants to select 200 students to interview and wants to use stratified sampling. Which of the following strategies will enable him to accomplish his goal?

___________ sampling involves giving a questionnaire to a very large population, and then after the questionnaires are reviewed, a smaller population is formed and a sample selected from it.

A pollster wanted to determine how much support a new library tax would have in a major metropolitan area. The metro area is divided into regions, Southeast, Southwest, Northeast, Northwest, and Central and 100 voters in each region are surveyed. What type of sampling technique is being employed?

A flip of a fair coin is used to simulate the gender of a series of simulated students. Given the following four flips, how many female students were there? H H T H

Simulation techniques go back to ancient times when the game of chess was invented to simulate warfare.

Identify the type of sample obtained by numbering each element in the population and then selecting every third or fifth or tenth, etc., number from the population to be included in the sample.

Five students were scheduled to take a five-question true-false quiz on the history of the Peloponnesian War. Since they didn't know anything about the subject, they were faced with a decision of whether or not to study. Before they decided to study they decided to run a simulation to see how many of them would likely pass the quiz if they all just guessed randomly. At least three correct answers would be needed to pass. They made up a hypothetical set of correct answers as shown in the following table. They then used the following random numbers table to ensure that the simulated responses would be truly random. Each simulated set of quiz responses began with a different highlighted number from the table and included the four numbers beneath it. An odd number was said to correspond to an answer of True, and an even number was said to correspond to an answer of False. How many passing grades were there in the five simulated responses?

An example of _________________ sampling could involve sampling successive units from a production line to ensure that products continue to meet certain standards.

Which of the following examples of a survey question is not meant to bias the response?

Why would researchers want to use a simulation rather than study the actual situation?

If all possible samples of a specific size have the same chance of being selected, what type of sampling is being used?

Simulate ten coin tosses using the following random numbers table. Represent the first toss with the highlighted number, then move down the column number-by-number moving from the bottom a column to the top of the next column to the right until ten numbers have been chosen. If the odd numbers represent tails, and the even numbers represent heads, how many tails are there in the group of ten simulated tosses?

The survey question "Do you feel that, if people were not allowed to park along this street, that children would not be able to play there?" is a poor survey question because it

A small-town politician is running for the district council seat. If the politician decides to poll three blocks in the district to determine his chance of winning the seat, what type of sampling is being used?

The survey question "Why do you think people break laws?" is a poor survey question because it

Identify the type of sample obtained by selecting a preexisting or natural group and using the members in the group as the sample.

In stratified sampling, the researcher selects intact, preexisting, or natural groups to use as samples.

A(n) __________ is defined as all subjects (human or otherwise) that are being studied.

List two advantages of using simulation techniques instead of actual situations?