Principles of Forensic DNA
for Officers of the Court
Principles of Forensic DNA for Officers of the Court
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Module 7 :: Statistics

Topic 2 :: Use of Statistical Evaluation of Forensic DNA Evidence

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Probability and Population Databases

Population databases of major racial and ethnic groups are used to determine estimates of the rarity of DNA profiles. These databases sometimes consist of as few as 100 profiles from unrelated persons, yet allow a reliable estimate of the chance of observing a given DNA profile in a larger population.

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