Exam 8: Sampling

The unit about which information is gathered and forms the basis for analysis is known as a:

Which method begins with a matrix or table describing the characteristics of a target population?

It's worth viewing sampling frames as __________ definitions of a study population.

Random selection permits the researcher to link findings from a sample to the body of probability theory in order to estimate the accuracy of those findings.

Sampling is often used when it is not possible to collect information from all persons you want to study and when it is not necessary to collect information from all persons.

The goal of sampling is to reduce potential biases.

Which of the following are true with respect to representativeness?

The bell-shaped curve is representative of:

Which of the following is not a reason for using random selection methods in selecting samples?

When each element of a population has an equal chance of selection to the sample, this process is known as ___________________ selection.

You want to know why some states that have the death penalty as a punishment use it more than other states. In order to develop your design, you identify those states that have capital punishment and those that do not. Among those that do have capital punishment, you separate states by the following criteria: annual executions over the last 20 years; states with fewer than a certain number of annual executions over the last 20 years; and those states that have not executed in the last 20 years. What sampling method are you using?

Use the city that your university is located in for this question. You have been given a grant to study the citizens' attitudes toward your university with respect to noise, traffic, and minor property crimes. How would you draw a multistage cluster sample that would be representative of your city?

If a researcher has a population of college students from which a sample has been drawn and concludes that on average there are higher grades achieved by those students who live on campus than those who commute, higher grades is an example of what?

Sampling is used because:

When a researcher uses a multistage cluster sampling technique they must repeat several sets including:

In probability theory, the standard ___________________ indicates how closely the sample estimates will be distributed around the population parameter.

With the use of stratified sampling, a researcher wants to reduce the:

EPSEM stands for:

You are asked to do a study of the traffic on your campus. As part of this study, you have been asked to identify the frequency of speeding by those using the campus roads. What type of sample would you use? How would you pull that sample?

Sample statistics are used to: