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In statistics, several tools are used to interpret the data. Measures of central tendency represent the characteristics of the data, such as mean, median, and mode. Additionally, measures of variance like standard deviation and range are used to find the spread of data from the mean. Relative standing measures the distance between data locations. Commonly used measures of relative standings are percentile, z score, and quartiles.
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Natural selection influences the frequencies of particular alleles and phenotypes within populations in several different ways. Primarily, natural selection can be directional, stabilizing, or disruptive. Directional selection favors one extreme trait and shifts the population towards that phenotype while selecting against individuals displaying alternate traits. Stabilizing selection favors an intermediate trait with a narrow range of variation. Deviation from the optimal phenotype towards an...
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Updated: Sep 23, 2025

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[Editorial]

A Rezkallah1, P Denis1

  • 1Service d'ophtalmologie, Hôpital de la Croix-Rousse, 103, Grande-Rue de la Croix-Rousse, 69004 Lyon, France.

Journal Francais D'Ophtalmologie
|May 13, 2022
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No abstract available in PubMed .

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