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  2. Secondary sex characteristic - Wikipedia

    en.wikipedia.org/wiki/Secondary_sex_characteristic

    A peacock displays his long, colored tail, an example of secondary sex characteristics. An adult human's Adam's apple , a visible secondary sex characteristic common in males. A secondary sex characteristic is a physical characteristic of an organism that is related to or derived from its sex, but not directly part of its reproductive system ...

  3. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    In the empirical sciences, the so-called three-sigma rule of thumb (or 3 σ rule) expresses a conventional heuristic that nearly all values are taken to lie within three standard deviations of the mean, and thus it is empirically useful to treat 99.7% probability as near certainty.

  4. Sexual characteristics - Wikipedia

    en.wikipedia.org/wiki/Sexual_characteristics

    Male primary sex characteristics are the penis, the scrotum and the ability to ejaculate when matured. Female primary sex characteristics are the vulva, vagina, uterus, fallopian tubes, cervix, and the ability to give birth and menstruate when matured. [1] Hormones that express sexual differentiation in humans include: estrogens such as estradiol

  5. What do teens mean when they say ‘sigma’? - AOL

    www.aol.com/news/teens-mean-sigma-000158935.html

    According to Know Your Meme, sigma is “referring to a supposed classification for men who are successful and popular, but also silent and rebellious.” Sigma males are “considered ‘equal ...

  6. Alpha and beta male - Wikipedia

    en.wikipedia.org/wiki/Alpha_and_beta_male

    Sigma male is an internet slang term to describe solitary, masculine men. The term gained prominence within Internet culture during the late 2010s and early 2020s, and has inspired numerous memes, graffitis and videos. [32] It is used to denote a male who is equivalent to an alpha male but

  7. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    The standard deviation of the distribution is ⁠ ⁠ (sigma). A random variable with a Gaussian distribution is said to be normally distributed , and is called a normal deviate . Normal distributions are important in statistics and are often used in the natural and social sciences to represent real-valued random variables whose distributions ...

  8. Do you speak Gen-Alpha? Test your ‘skibidi’ knowledge with ...

    www.aol.com/news/speak-gen-alpha-test-skibidi...

    Sigma. Your middle schooler describes his friend as “sigma.” That means he thinks his friend is: a. weak. b. weird. c. Greek. d. an alpha male. Rizzler. Your friend is described as a ...

  9. Omegaverse - Wikipedia

    en.wikipedia.org/wiki/Omegaverse

    [8] [17] Despite not using the term "omega", the story created many of the characteristics later associated with the Omegaverse genre. [8] Over the next few months, other anonymous authors shared similar stories, until on November 9 a new writing prompt mentioned Alpha, Beta and Omega men for the first time, spurring the creation of three works.