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  2. Significant figures - Wikipedia

    en.wikipedia.org/wiki/Significant_figures

    0.00034 has 2 significant figures (3 and 4) if the resolution is 0.00001. Zeros to the right of the last non-zero digit (trailing zeros) in a number with the decimal point are significant if they are within the measurement or reporting resolution. 1.200 has four significant figures (1, 2, 0, and 0) if they are allowed by the measurement resolution.

  3. Scientific notation - Wikipedia

    en.wikipedia.org/wiki/Scientific_notation

    On scientific calculators, it is usually known as "SCI" display mode. In scientific notation, nonzero numbers are written in the form. or m times ten raised to the power of n, where n is an integer, and the coefficient m is a nonzero real number (usually between 1 and 10 in absolute value, and nearly always written as a terminating decimal ).

  4. 42 (number) - Wikipedia

    en.wikipedia.org/wiki/42_(number)

    42 is the number of integer partition of 10: the number of ways of expressing 10 as a sum of positive integers. [14] 1111123, one of the forty-two unordered integer partitions of 10, has 42 ordered compositions, since. As a polygonal number, 42 is the first (non-trivial) fifteen-sided pentadecagonal number. [15]

  5. Phrases from The Hitchhiker's Guide to the Galaxy - Wikipedia

    en.wikipedia.org/wiki/Phrases_from_The_Hitchhiker...

    The 42 puzzle orthorectified (1), and the number 42 hidden as binary (2), Hindu-Arabic numerals (3) and Roman numerals (4) The 42 Puzzle is a game devised by Douglas Adams in 1994 for the United States series of The Hitchhiker's Guide to the Galaxy books. The puzzle is an illustration consisting of 42 multi-coloured balls, in 7 columns and 6 rows.

  6. Sigmund Freud - Wikipedia

    en.wikipedia.org/wiki/Sigmund_Freud

    Sigmund Freud (/ f r ɔɪ d / FROYD, German: [ˈziːkmʊnt ˈfrɔʏt]; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating pathologies seen as originating from conflicts in the psyche, through dialogue between patient and psychoanalyst, and the distinctive theory of mind and ...

  7. Standard deviation - Wikipedia

    en.wikipedia.org/wiki/Standard_deviation

    The standard deviation σ of X is defined as which can be shown to equal. Using words, the standard deviation is the square root of the variance of X . The standard deviation of a probability distribution is the same as that of a random variable having that distribution. Not all random variables have a standard deviation.

  8. Statistics - Wikipedia

    en.wikipedia.org/wiki/Statistics

    Statistics is a mathematical body of science that pertains to the collection, analysis, interpretation or explanation, and presentation of data, [8] or as a branch of mathematics. [9] Some consider statistics to be a distinct mathematical science rather than a branch of mathematics. While many scientific investigations make use of data ...

  9. Religious significance of Jerusalem - Wikipedia

    en.wikipedia.org/wiki/Religious_significance_of...

    t. e. The city of Jerusalem is sacred to many religious traditions, including the Abrahamic religions of Judaism, Christianity and Islam which consider it a holy city. [1] Some of the most sacred places for each of these religions are found in Jerusalem, most prominently, the Temple Mount / Haram Al-Sharif. [2]