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Related Concept Videos

What is Variation?01:14

What is Variation?

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.
The range, standard deviation, standard error, and variance are the different measures of variation.
Range: The range is the difference between its maximum and...
Variability: Analysis01:11

Variability: Analysis

Measures of variability are statistical metrics that reveal the dispersion pattern within a dataset. They are pivotal in biostatistics, providing insights into the heterogeneity within health and biological data. Variability signifies the degree to which data points diverge from one another, helping researchers understand the potential range of values and associated uncertainty within the data.
The range is a simple measure of variability, indicating the difference between the highest and...
Variation01:19

Variation

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.
When independent and dependent variables are plotted on a scatter plot, the slope of a line is a value that describes the rate of change between the two...
Genetic Variation01:25

Genetic Variation

Genetic variation is the diversity in DNA sequences found among individuals of the same species. This diversity is crucial for a species' survival because it helps organisms adapt to environmental changes. Genetic variation begins with fertilization, where an egg and sperm cell merge. Each of these cells carries 23 chromosomes, up to 46 in the fertilized egg. Chromosomes are long DNA strands that contain genes, the basic units of heredity.
Genes exist in different versions called alleles, which...
Variation: Normal Distribution, Range, and Standard Deviation02:32

Variation: Normal Distribution, Range, and Standard Deviation

In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
One-Way ANOVA01:18

One-Way ANOVA

One-way ANOVA analyzes more than three samples categorized by one factor. For example, it can compare the average mileage of sports bikes. Here, the data is categorized by one factor - the company. However, one-way ANOVA cannot be used to simultaneously compare the sample mean of three or more samples categorized by two factors. An example of two factors would be sports bikes from different companies driven in different terrains, such as a desert or snowy landscape. Here, two-way ANOVA is used...

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Related Experiment Video

Updated: May 21, 2026

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients
07:34

Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

Published on: August 22, 2018

Exploring the variation within.

Evan Z Macosko, Steven A McCarroll

    Nature Genetics
    |May 30, 2012
    PubMed
    Summary
    This summary is machine-generated.

    Somatic mosaicism, where cells have different genomes, is common in individuals. This genetic variation can signal the early development of cancer, challenging traditional views of cellular uniformity.

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    Related Experiment Videos

    Last Updated: May 21, 2026

    Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients
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    Probing the Limits of Egg Recognition Using Egg Rejection Experiments Along Phenotypic Gradients

    Published on: August 22, 2018

    A Within-Subject Experimental Design using an Object Location Task in Rats
    09:28

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    Published on: May 6, 2021

    Following the Dynamics of Structural Variants in Experimentally Evolved Populations
    04:52

    Following the Dynamics of Structural Variants in Experimentally Evolved Populations

    Published on: February 3, 2023

    Area of Science:

    • Genetics
    • Cell Biology
    • Oncology

    Background:

    • Traditionally, an individual's cells are presumed to possess identical genomes.
    • Recent research challenges this long-held assumption, revealing genetic heterogeneity within a single organism.

    Discussion:

    • Two new studies demonstrate the prevalence of somatic mosaicism.
    • This phenomenon involves genetic differences arising in cells after conception.

    Key Insights:

    • Somatic mosaicism is a widespread biological occurrence.
    • It serves as a potential early indicator for the onset of cancerous growths.

    Outlook:

    • Further research into somatic mosaicism could refine cancer detection and prevention strategies.
    • Understanding the mechanisms driving mosaicism may offer new therapeutic targets.