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  2. Standard normal table - Wikipedia

    en.wikipedia.org/wiki/Standard_normal_table

    In statistics, a standard normal table, also called the unit normal table or Z table, [1] is a mathematical table for the values of ...

  3. Z-test - Wikipedia

    en.wikipedia.org/wiki/Z-test

    Looking up the z-score in a table of the standard normal distribution cumulative probability, we find that the probability of observing a standard normal value below −2.47 is approximately 0.5 − 0.4932 = 0.0068.

  4. Table of nuclides - Wikipedia

    en.wikipedia.org/wiki/Table_of_nuclides

    A table or chart of nuclides is a two-dimensional graph of isotopes of the elements, in which one axis represents the number of neutrons (symbol N) and the other represents the number of protons (atomic number, symbol Z) in the atomic nucleus. Each point plotted on the graph thus represents a nuclide of a known or hypothetical chemical element.

  5. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    The table below shows a comparison of Greek letters rendered in TeX and HTML. The font used in the TeX rendering is an italic style. The font used in the TeX rendering is an italic style. This is in line with the convention that variables should be italicized.

  6. Atomic number - Wikipedia

    en.wikipedia.org/wiki/Atomic_number

    The Rutherford–Bohr model of the hydrogen atom (Z = 1) or a hydrogen-like ion (Z > 1). In this model, it is an essential feature that the photon energy (or frequency) of the electromagnetic radiation emitted (shown) when an electron jumps from one orbital to another be proportional to the mathematical square of atomic charge (Z 2).

  7. Valley of stability - Wikipedia

    en.wikipedia.org/wiki/Valley_of_stability

    The stable nuclide 206 Pb has Z = 82 and N = 124, for example. For this reason, the valley of stability does not follow the line Z = N for A larger than 40 (Z = 20 is the element calcium). [3] Neutron number increases along the line of beta stability at a faster rate than atomic number.

  8. Who exactly is Gen Alpha and Gen Z? A guide to the ... - AOL

    www.aol.com/news/exactly-gen-alpha-gen-z...

    Gen Z tends to criticize Gen Alpha's dependence on screens. As a result, they say Gen Alpha’s “iPad kids” have developed unwanted, unhealthy and downright strange behavior, say Gen Z critics

  9. Zech's logarithm - Wikipedia

    en.wikipedia.org/wiki/Zech's_logarithm

    A table of Zech logarithms for this field are Z(−∞) = 0, Z(0) = −∞, Z(1) = 5, Z(2) = 3, Z(3) = 2, Z(4) = 6, Z(5) = 1, and Z(6) = 4. The multiplicative order of α is 7, so the exponential representation works with integers modulo 7.