# Chapter 7 Terms

- StudyBlue
- Arizona
- Arizona State University - Tempe
- Political Science
- Political Science 301
- Woodall
- Chapter 7 Terms

**Created:**2010-03-25

**Last Modified:**2011-06-28

#### Related Textbooks:

Political Science Research MethodsThe degree of belief that an estimated range of values – more specifically, a high or low value-includes or covers the population parameter.

A nonprobability sample in which the selection of elements is determined by the researcher’s convenience.

A stratified sample in which elements sharing a characteristic are underrepresented or overrepresented in the sample.

A particular case or entity about which information is collected; the unit of analysis.

A statistic based on sample observations that is used to estimate the numerical value of an unknown population parameter.

The mean or average value of a sample statistic based on repeated samples from a population.

A probability sample that draws elements from a stratified population at a rate proportional to the size of the samples.

A nonprobability sample in which a researcher uses discretion in selecting elements for observation.

A procedure used to improve the representativeness of telephone samples by giving both listed and unlisted numbers a chance of selection.

A subset of observations or cases drawn from a specified population.

The bias that occurs whenever some elements of a population are systematically excluded from a sample. It is usually due to an incomplete sampling frame or a nonprobability method of selecting elements.

The estimator of a population characteristic or attribute that is calculated from sample data.

A theoretical (nonobserved) distribution of sample statistics calculated on samples of size *N* that, if known, permits the calculation of confidence intervals and the test of statistical hypotheses.

The difference between a sample estimate and a corresponding population parameter that arises because only a portion of a population is observed.

The number of elements in a sampling frame divided by the desired sample size.

The standard deviation or measure of variability or dispersion of a sampling distribution.

A probability sample in which elements are selected from a list at predetermined intervals.

#### Words From Our Students

"StudyBlue is great for studying. I love the study guides, flashcards, and quizzes. So extremely helpful for all of my classes!"

Alice, Arizona State University

"I'm a student using StudyBlue, and I can 100% say that it helps me so much. Study materials for almost every subject in school are available in StudyBlue. It is so helpful for my education!"

Tim, University of Florida

"StudyBlue provides way more features than other studying apps, and thus allows me to learn very quickly! I actually feel much more comfortable taking my exams after I study with this app. It's amazing!"

Jennifer, Rutgers University

"I love flashcards but carrying around physical flashcards is cumbersome and simply outdated. StudyBlue is exactly what I was looking for!"

Justin, LSU