Glossary Term
Chi-Square Test
Chi-square test is a statistical test for testing the null hypothesis that the distribution of a discrete random variable coincides with a given distribution. It is one of the most popular goodness-of-fit tests.
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Glossary Term
Chi-square test is a statistical test for testing the null hypothesis that the distribution of a discrete random variable coincides with a given distribution. It is one of the most popular goodness-of-fit tests.
Glossary Term
The genetic material of the nucleus, consisting of deoxyribonucleoprotein, which occurs in two forms during the phase between mitotic divisions: 1) as heterochromatin, seen as condensed, readily stainable clumps; 2) as euchromatin, dispersed lightly staining or nonstaining material. During mitotic division the chromatin condenses into chromosomes.
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A structure found in cells that is comprised of a strand of linearized double-stranded DNA plus proteins that package the DNA in a condensed coil form and regulate chromosomal function.
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A sequence of single-stranded RNA that forms a covalently closed continuous loop.
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Neoplasm-derived DNA fragments found in the bloodstream or other bodily fluids that have been released from cells.
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A specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid.
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The ratio of standard deviation to mean, expressed as a percentage or fraction.
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A research study that compares a particular outcome (such as lung cancer) in groups of individuals who are alike in many ways but differ by a certain characteristic (for example, female nurses who smoke compared with those who do not smoke).
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A range of values for a parameter that may contain the parameter and the degree of confidence that it is in fact there.
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A sequence pattern derived from the alignment of multiple sequences that represents the nucleotide or amino acid most likely to occur at each position in a sequence.
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The presence of any substance or organism that makes a preparation impure.
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Variation in the number of copies of a particular sequence within the genetic material of an individual. Large-scale copy number polymorphisms are common and widely distributed in the human genome.