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What is Variation?01:14

What is Variation?

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Apart from the measures of central tendency, distribution, outliers, and the changing characteristics of data with time, an important characteristic of any data set is its variation or spread. In some data sets, the data values are concentrated closely near the mean; in others, the data values are more widely spread out from the mean.
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Range: The range is the difference between its maximum and...
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Variation01:19

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An important characteristic of any set of data is the variation in the data. In some data sets, the data values are concentrated closely near the mean; in other data sets, the data values are more widely spread out from the mean. The most common measure of variation, or spread, is the standard deviation, which is the square root of variance.
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Because the DNA segments are cut and reorganized in a direction-specific manner, site-specific recombination has emerged as an efficient genetic engineering technique. Flippase and Cyclization recombinases or Flp and Cre, respectively, are two members of the tyrosine recombinase family derived from bacteriophages, that are used to mediate site-specific DNA insertions, deletions, and targeted expression of proteins in mammalian cell lines.
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Change in atmospheric pressure with height is particularly interesting. The decrease in atmospheric pressure with increasing altitude is due to the decreasing gravitational force per unit area as we move away from the surface of the earth.
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Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
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The coefficient of variation measures the dispersion of the data points or distribution around the mean. Using the coefficient of variation, we can compare two data series with drastically different means or different units of measurement. The coefficient of variation for a sample and a population is expressed as a percentage of the ratio of standard deviation to the mean.
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Variations on a Theme by Darwin.

Mark E Sobel1

  • 1American Society for Investigative Pathology, Rockville, Maryland.

The American Journal of Pathology
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Summary
This summary is machine-generated.

Dr. Mark E. Sobel shares reflections from his 16-year tenure as Executive Officer of the American Society for Investigative Pathology. His editorial highlights key experiences and contributions during his service.

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Area of Science:

  • Investigative Pathology
  • Scientific Society Leadership

Background:

  • Editorial reflects on the tenure of Dr. Mark E. Sobel as Executive Officer.
  • Service period: 2001 to 2017 for the American Society for Investigative Pathology.

Discussion:

  • Reflections on leadership roles within a scientific society.
  • Insights into the operational and strategic aspects of managing the American Society for Investigative Pathology.

Key Insights:

  • Personal perspective on the evolution of investigative pathology during the early 21st century.
  • The impact of sustained leadership on scientific organizations.

Outlook:

  • Potential for future leaders in scientific societies.
  • Continued growth and advancement in the field of investigative pathology.