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  2. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    Alternatively, sample size may be assessed based on the power of a hypothesis test. For example, if we are comparing the support for a certain political candidate among women with the support for that candidate among men, we may wish to have 80% power to detect a difference in the support levels of 0.04 units.

  3. p-chart - Wikipedia

    en.wikipedia.org/wiki/P-chart

    One technique is to fix sample size so that there is a 50% chance of detecting a process shift of a given amount (for example, from 1% defective to 5% defective). If δ is the size of the shift to detect, then the sample size should be set to n ≥ ( 3 δ ) 2 p ¯ ( 1 − p ¯ ) {\displaystyle n\geq \left({\frac {3}{\delta }}\right)^{2}{\bar {p ...

  4. Klinefelter syndrome - Wikipedia

    en.wikipedia.org/wiki/Klinefelter_syndrome

    The term "hypogonadism" in XXY symptoms is often misinterpreted to mean "small testicles", when it instead means decreased testicular hormone/endocrine function. Because of (primary) hypogonadism, individuals often have a low serum testosterone level, but high serum follicle-stimulating hormone and luteinizing hormone levels, hypergonadotropic ...

  5. Penny (unit) - Wikipedia

    en.wikipedia.org/wiki/Penny_(unit)

    Diameter of the nail also varies based on penny size, depending on nail type. Nails under 1 + 1 ⁄ 4 inch, often called brads , are sold mostly in small packages with only a length designation or with length and wire gauge designations; for example, 1″ 18 ga. or 3 ⁄ 4 ″ 16 ga.

  6. Hazard ratio - Wikipedia

    en.wikipedia.org/wiki/Hazard_ratio

    For example, a hazard ratio of 2 is thought to mean that a group has twice the chance of dying than a comparison group. In the Cox-model, this can be shown to translate to the following relationship between group survival functions : S 1 ( t ) = S 0 ( t ) r {\displaystyle S_{1}(t)=S_{0}(t)^{r}} (where r is the hazard ratio). [ 8 ]

  7. Apparent magnitude - Wikipedia

    en.wikipedia.org/wiki/Apparent_magnitude

    Asteroid 65 Cybele and two stars in the constellation Aquarius, with their magnitudes labeled. Apparent magnitude (m) is a measure of the brightness of a star, astronomical object or other celestial objects like artificial satellites.

  8. Blood alcohol content - Wikipedia

    en.wikipedia.org/wiki/Blood_alcohol_content

    V d is the volume of distribution (L); typically body weight (kg) multiplied by 0.71 L/kg for men and 0.58 L/kg for women [33] [34] although estimation using TBW is more accurate. [35] A standard drink, defined by the WHO as 10 grams of pure alcohol, [36] is the most frequently used measure in many countries. Examples: An 80 kg man drinks 20 ...

  9. Glock - Wikipedia

    en.wikipedia.org/wiki/Glock

    The Glock 37 first appeared in 2003. It was designed to offer ballistic performance comparable with the .45 ACP in the frame size of the Glock 17. The concern with the size of the Glock 20/21 has been addressed by the Glock 36, 21SF, and 30SF, all of which featured reduced-size frames. The standard magazine capacity of the Glock 37 is 10 rounds.

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