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  2. Human sex ratio - Wikipedia

    en.wikipedia.org/wiki/Human_sex_ratio

    The human sex ratio is the ratio of males to females in a population in the context of anthropology and demography. In humans, the natural sex ratio at birth is slightly biased towards the male sex. It is estimated to be about 1.05 [1] or 1.06 [2] or within a narrow range from 1.03 to 1.06 [3] males per female.

  3. Log-normal distribution - Wikipedia

    en.wikipedia.org/wiki/Log-normal_distribution

    The way it is done there is that we have two approximately Normal distributions (e.g., p1 and p2, for RR), and we wish to calculate their ratio. [ b ] However, the ratio of the expectations (means) of the two samples might also be of interest, while requiring more work to develop.

  4. AST/ALT ratio - Wikipedia

    en.wikipedia.org/wiki/AST/ALT_ratio

    The proportion of AST to ALT in hepatocytes is about 2.5:1, but because AST is removed from serum by the liver sinusoidal cells twice as quickly (serum half-life t 1/2 = 18 hr) compared to ALT (t 1/2 = 36 hr), so the resulting serum levels of AST and ALT are about equal in healthy individuals, resulting in a normal AST/ALT ratio around 1.

  5. Transmission coefficient - Wikipedia

    en.wikipedia.org/wiki/Transmission_coefficient

    Different fields of application have different definitions for the term. All the meanings are very similar in concept: In chemistry, the transmission coefficient refers to a chemical reaction overcoming a potential barrier; in optics and telecommunications it is the amplitude of a wave transmitted through a medium or conductor to that of the incident wave; in quantum mechanics it is used to ...

  6. Vuong's closeness test - Wikipedia

    en.wikipedia.org/wiki/Vuong's_closeness_test

    In statistics, the Vuong closeness test is a likelihood-ratio-based test for model selection using the Kullback–Leibler information criterion. This statistic makes probabilistic statements about two models. They can be nested, strictly non-nested or partially non-nested (also called overlapping). The statistic tests the null hypothesis that ...

  7. Sam Houston Math, Science, and Technology Center - Wikipedia

    en.wikipedia.org/wiki/Sam_Houston_Math,_Science...

    Sam Houston Math, Science, and Technology Center (SHMSTC), formerly known as Sam Houston High School is a high school located in the Hawthorne Place and Timber Garden subdivisions, [2] in Houston, Texas, United States.

  8. 21:9 aspect ratio - Wikipedia

    en.wikipedia.org/wiki/21:9_aspect_ratio

    The 64:27 aspect ratio of "21:9" is an extension of the existing video aspect ratios 4:3 (SDTV) and 16:9 (HDTV), as it is the third power of 4:3, where 16:9 of traditional HDTV is 4:3 squared. This allows electronic scalers and optical anamorphic lenses to use an easily implementable 4:3 (1. 3 :1) scaling factor.

  9. 1 Popular Artificial Intelligence (AI) Stock That Wall Street ...

    www.aol.com/1-popular-artificial-intelligence-ai...

    PLTR PS Ratio data by YCharts. Palantir trades at more than 36 times sales. The last time it traded this high, it didn't end well for the stock. Furthermore, a good rule of thumb when using the ...