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

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

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

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

Cluster Sample

A probability sample that is used when no list of elements exists. The sampling frame initially consists of clusters of elements.

Confidence

Convenience Sample

Disproportionate Sample

Element

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

Estimator

Expected Value

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

Nonprobability Sample

A sample for which each element in the total population has an unknown probability of being selected.

Population

All the cases or observations covered by a hypothesis; all the units of analysis to which a hypothesis applies.

Population Parameter

The incidence of a characteristic or an attribute in a population (not a sample).

Probability Sample

A sample for which each element in the total population has a known probability of being selected.

Proportionate Sample

Purposive Sample

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

Quota Sample

A nonprobability sample in which elements are sampled in proportion to their representation in the population.

Random Digit Dialing

Random Start

Selection of a number at random to determine where to start selecting elements in a systematic sample.

Sample

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

Sample Bias

Sample Statistic

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

Sampling Distribution

*N* that, if known, permits the calculation of confidence intervals and the test of statistical hypotheses.

Sampling Error

Sampling Fraction

The population from which a sample is drawn. Ideally it is the same as the total population of interest to a study.

Sampling Frame

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Sampling Interval

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

Sampling Unit

The entity listed in a sampling frame. It may be the same as an element, or it may be a group or cluster of elements.

Simple Random Sample

A probability sample in which each element has an equal chance of being selected.

Snowball Sample

A sample in which respondents are asked to identify additional members of a population.

Standard Error

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

Statistical Inference

The mathematical theory and techniques for making conjectures about the unknown characteristics (parameter) of populations based on samples.

Stratified Sample

A probability sample in which elements sharing one or more characteristics are grouped, and elements are selected from each group in proportion to the group?s representation in the total population.

Stratum

A subgroup of a population that shares one or more characteristics.

Systematic Sample

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

Weighting Factor

A mathematical factor used to make a disproportionate sample representative.

About this deck

Author: Anonymous

Textbook: Political Science Research Methods

Created: 2010-03-25

Updated: 2011-06-28

Size: 33 flashcards

Keywords: flash card flashcards digital flashcards note sharing notes textbook wiki college dorm class classroom exam homework test quiz university college education learn student teachers tutors share, study blue studyblue studyblu

Views: 20

Textbook: Political Science Research Methods

Created: 2010-03-25

Updated: 2011-06-28

Size: 33 flashcards

Keywords: flash card flashcards digital flashcards note sharing notes textbook wiki college dorm class classroom exam homework test quiz university college education learn student teachers tutors share, study blue studyblue studyblu

Views: 20

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