methods
type: Collection
type: ConceptGroup
member: sampling error

longitudinal analysis
type: Concept
narrower: sampling error

longitudinal research
type: Concept
narrower: sampling error

longitudinal study
type: Concept
narrower: sampling error

sampling
type: Concept
narrower: sampling error

sampling error
type: Concept
broader: sampling
broader: longitudinal study
broader: longitudinal research
broader: longitudinal analysis
definition: Sampling error consists of two components: sampling variance and sampling bias. Sometimes overall sampling error is referred to as sampling mean squared error (MSE), which can be decomposed as in the following formula: where P is the true population value, p is the measured sample estimate, and p' is the hypothetical mean value of realizations of p averaged across all possible replications of the sampling process producing p. [Source: Encyclopedia of Survey Research Methods; Sampling Error]