Term

Definition
the entire set of elements 


Term

Definition
subset of eements from the population 


Term

Definition
list of members of study population from which sample is selected 


Term

Definition
a collection of elements
ex. household 


Term

Definition
any single unit sampled from the population 


Term

Definition
exists when a conclusion based on a sample, or subset, of a larger population holds true for that population 


Term
crosspopulation generalizability 

Definition
exists when findings about one group, population, or setting hold true for other groups, population, or settings
(external validity) 


Term

Definition
any difference between the characterists of a sample and the characteristics of the population from which is drawn 


Term

Definition
set of elements larger than or different from the population that was sampled and to which the researcher would like to generalize any study findings 


Term

Definition
small sample of the population for which the generalizations are sought



Term
probability sampling methods 

Definition
sampling methods that rely on a random, or chance, selection method so that the probability of selection of population elements is known 


Term
nonprobability sampling methods 

Definition
sampling methods that do not let us know the likelihood in advance 


Term

Definition
the likelihood that an element from the population will be chosen 


Term

Definition
the fundamental element of probability samples
every element of the population has a known and independent chance of being selected into the sample 


Term

Definition
requires a procedure that generates numbers or identifies cases strictly on the basis of chance 


Term

Definition
a table containing lists of numbers that are ordered solely on the basis of chance 


Term

Definition
machine dials random numbers within phone prefixes corresponding to the area in which the survey is to be conducted 


Term

Definition
each element is returned to the sampling frame from which it is selected so thay it may be sampled again 


Term
systematic random sampling 

Definition
a method of sampling in which sample elements are selected from a list or from sequential files, with every nth element being selected 


Term

Definition
the number of cases from one sampled case to another 


Term

Definition
the sequence of elements of the population varies in some regular, periodic pattern 


Term
stratified random sampling 

Definition
a method of sampling in which sample elements are selected separately from population strata that are identified in advance by the researcher 


Term
proportionate stratified sampling 

Definition
sampling methods in which elements are selected from strata in exact proportion to their representation in the population 


Term
disproportionate stratified sampling 

Definition
sampling in which elements are selected from strata in different proportions from those that appear in the population 


Term
multistage cluster sampling 

Definition
sampling in which elements are selected in two or more stages, with the first stage being the random selection of natural occurring clusters and the last stage being the random selection of multilevel elements within clusters 


Term

Definition
sampling in which elements are selected on the basis of convenience 


Term

Definition
a nonprobability sampling method in which elements are selected to ensure that the sample represents certain characterists in proportion to their prevalence in the population 


Term

Definition
a nonprobability sampling method in which methods are selected for a purpose, usually because of their unique position 


Term

Definition
a method of sampling in which sample elements are selected a they are identified by successive informants or interviewees 


Term

Definition
a distribution of the value of a statistic from many samples 


Term

Definition
statistics used to estimate how likely it is that a statistical result based on data from a random sample is representative of the population from which the sample is assumed to have been selected 


Term
systematic sampling error 

Definition
sampling error that occurs when some population characteristics are overorunderrepresented in the sample because of particular features of the method of selecting the sample 


Term

Definition
a symmetric distribution shaped like a bell curve and centered around the population mean 


Term

Definition
sampling error caused by chance factors that cause differences between the population and the sample 


Term

Definition
the value of a statistic, such as a mean, computed from sample data 


Term

Definition
the value of a statistic, such as a mean, computed using the data for the entire population 


Term

Definition
the range defined by the confidence limits for a sample statistic 


Term

Definition
the upper and lower bounds around an estimate of a population parameter based on a sample statistic 


Term

Definition
the cases about which measures actually are obtained in a sample 


Term

Definition
an error in reasoning in which incorrect conclusions about individual level processes are drawn from grouplevel data 


Term

Definition
an error in reasoning that occurs when incorrect conclusions about grouplevel processes are based on individuallevel data 

