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  2. PDF - Wikipedia

    en.wikipedia.org/wiki/PDF

    The content view is based on the physical order of objects within the PDF's content stream and may be displayed by software that does not fully support the tags' view, such as the Reflow feature in Adobe's Reader. PDF/UA, the International Standard for accessible PDF based on ISO 32000-1 was first published as ISO 14289–1 in 2012 and ...

  3. Standard deviation - Wikipedia

    en.wikipedia.org/wiki/Standard_deviation

    The mean and the standard deviation of a set of data are descriptive statistics usually reported together. In a certain sense, the standard deviation is a "natural" measure of statistical dispersion if the center of the data is measured about the mean. This is because the standard deviation from the mean is smaller than from any other point.

  4. Interleukin 4 - Wikipedia

    en.wikipedia.org/wiki/Interleukin_4

    The interleukin 4 (IL4, IL-4) is a cytokine that induces differentiation of naive helper T cells (T h 0 cells) to T h 2 cells. Upon activation by IL-4, T h 2 cells subsequently produce additional IL-4 in a positive feedback loop. IL-4 is produced primarily by mast cells, T h 2 cells, eosinophils and basophils. [4]

  5. Interleukin 5 - Wikipedia

    en.wikipedia.org/wiki/Interleukin_5

    16191 Ensembl ENSG00000113525 ENSMUSG00000036117 UniProt P05113 P04401 RefSeq (mRNA) NM_000879 NM_010558 RefSeq (protein) NP_000870 NP_034688 Location (UCSC) Chr 5: 132.54 – 132.56 Mb Chr 11: 53.61 – 53.62 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Interleukin 5 (IL-5) is an interleukin produced by type-2 T helper cells and mast cells. Function Through binding to the ...

  6. Interleukin-4 receptor - Wikipedia

    en.wikipedia.org/wiki/Interleukin-4_receptor

    The interleukin 4 receptor is a type I cytokine receptor.It is a heterodimer, that is, composed of two subunits. IL4R is the human gene coding for IL-4Rα, the subunit which combines with either common gamma chain (γc, forming the type I IL4 receptor) or with IL-13Rα1 (forming the type II IL4 receptor).

  7. Unbiased estimation of standard deviation - Wikipedia

    en.wikipedia.org/wiki/Unbiased_estimation_of...

    Bias in standard deviation for autocorrelated data. The figure shows the ratio of the estimated standard deviation to its known value (which can be calculated analytically for this digital filter), for several settings of α as a function of sample size n. Changing α alters the variance reduction ratio of the filter, which is known to be

  8. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    If is a standard normal deviate, then = + will have a normal distribution with expected value and standard deviation . This is equivalent to saying that the standard normal distribution Z {\textstyle Z} can be scaled/stretched by a factor of σ {\textstyle \sigma } and shifted by μ {\textstyle \mu } to yield a different normal distribution ...

  9. Algorithms for calculating variance - Wikipedia

    en.wikipedia.org/wiki/Algorithms_for_calculating...

    This algorithm can easily be adapted to compute the variance of a finite population: simply divide by n instead of n − 1 on the last line.. Because SumSq and (Sum×Sum)/n can be very similar numbers, cancellation can lead to the precision of the result to be much less than the inherent precision of the floating-point arithmetic used to perform the computation.