Glossary C

Codes of ethics are documents that guide the ethical practice of mental health professionals.

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Coding is the process whereby raw data are transformed into standardized form suitable for machine processing and analysis. Coding is the form in which information is mentally or internally represented.

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- Coding system : Coding system refers to the Brunerian concept referring to a hierarchical arrangement of related categories.

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CODIS (Combined DNA Idex System)

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Codominance is a condition in which two (2) heterozygous but equally powerful alleles produce a phenotype in which both genes are fully and equally expressed. It is a condition in which both alleles of a specific gene contribute to the characteristic that is expressed, as in AB blood type.

Coefficient alpha is a statistic used to determine internal reliability of tests that use interval or ratio scales. It is a generalized method for estimating reliability. Alpha is similar to the KR20 formula, except that it allows items to take on values other than 0 and 1.

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Coefficient of alienation is a term used in correlation and regression analysis that refers to the index of non-association between two (2) variables.

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- Coefficient of correlation (r) : Coefficient of correlation (r) is a mathematical expression indicating the magnitude of correlation between two (2) variables. It is a statistical index ranging from 1.00 to 1.00 that indicates the direction and degree of correlation.