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Glossary

All A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Other
Random sampling
The selection of a group of subjects (sample) for study from a larger group (population) so that each individual is chosen entirely by chance. This type of sampling is also called "equal probability" sampling because each member of the population has an equal probability of being included. Random sampling is designed to reduce bias.
Readability
The level of difficulty in a written passage. Readability depends on factors such as length of words, length of sentences, grammatical complexity and word frequency (Baker, 2000).
Redesignation
The process of changing the English proficiency status of a student from limited English proficient (LEP) to fluent English proficient (FEP). See entry or exit criteria.
Redesignation Rate
The percentage of students who are reclassified from limited English proficient (LEP) to fluent English proficient each year.The redesignation rate is often used as part of the accountability system for a school or district, although it does not provide valid data on program effectiveness.
Related research
Not considered scientifically based research, but can be used to provide the following background information: Knowledge about the intervention (program or practice). Knowledge about the application/implementation of the intervention (program or practice).
Reliability
The degree to which the test consistently measures what it is suppose to measure.
Replicability
A study is considered replicable if it can be repeated by another researcher. You can determine if a study is replicable by asking the following questions: Is the description of the design detailed so that duplication of the study is possible? Are the findings clearly describe and reported? Are the findings presented clearly and objectively? Can the findings be enhanced with additional research?
Research problem
A formal statement of a question or hypothesis that implies empirical investigation.
Research question
A question that reframes all of the descriptions of points from the readers' or consumers' perspective.
Risk Factors
Conditions for a group, individual, or defined
geographic area that increase the likelihood of a substance use/abuse problem
occurring. [4]


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