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  2. Dividend yield - Wikipedia

    en.wikipedia.org/wiki/Dividend_yield

    For example, if stock X was bought for $20/share, it split 2:1 three times (resulting in 8 total shares), it is now trading for $50 ($400 for 8 shares), and it pays a dividend of $2/year, then the yield on cost is 80% (8 shares × $2/share = $16/yr paid over $20 invested -> 16/20 = 0.8).

  3. Chi-squared distribution - Wikipedia

    en.wikipedia.org/wiki/Chi-squared_distribution

    These values can be calculated evaluating the quantile function (also known as "inverse CDF" or "ICDF") of the chi-squared distribution; [24] e. g., the χ 2 ICDF for p = 0.05 and df = 7 yields 2.1673 ≈ 2.17 as in the table above, noticing that 1 – p is the p-value from the table.

  4. Radiation pressure - Wikipedia

    en.wikipedia.org/wiki/Radiation_pressure

    Solar radiation pressure on objects near the Earth may be calculated using the Sun's irradiance at 1 AU, known as the solar constant, or G SC, whose value is set at 1361 W/m 2 as of 2011. [17] All stars have a spectral energy distribution that depends on their surface temperature. The distribution is approximately that of black-body radiation.

  5. 0.999... - Wikipedia

    en.wikipedia.org/wiki/0.999...

    When asked about 0.999..., novices often believe there should be a "final 9", believing 1 − 0.999... to be a positive number which they write as "0.000...1". Whether or not that makes sense, the intuitive goal is clear: adding a 1 to the final 9 in 0.999... would carry all the 9s into 0s and leave a 1 in the ones place.

  6. List of unusual units of measurement - Wikipedia

    en.wikipedia.org/wiki/List_of_unusual_units_of...

    In the mid-1960s, to defeat the advantage of the recently introduced computers for the then popular rally racing in the Midwest, competition lag times in a few events were given in centids (1100 day, 864 seconds, 14.4 minutes), millids (1 ⁄ 1,000 day, 86.4 seconds), and centims (1100 minute, 0.6 seconds) the latter two looking and ...

  7. Gini coefficient - Wikipedia

    en.wikipedia.org/wiki/Gini_coefficient

    If there are no negative incomes, it is also equal to 2A and 1 − 2B due to the fact that A + B = 0.5. [23] Assuming non-negative income or wealth for all, the Gini coefficient's theoretical range is from 0 (total equality) to 1 (absolute inequality). This measure is often rendered as a percentage, spanning 0 to 100.

  8. Angle - Wikipedia

    en.wikipedia.org/wiki/Angle

    It equals 6°, so a whole turn was divided into 60 hexacontades. pechus: 144 to 180: 2° to 2°30′ The pechus was a Babylonian unit equal to about 2° or ⁠2 + 1 / 2 ⁠ °. diameter part: ≈376.991: ≈0.95493° The diameter part (occasionally used in Islamic mathematics) is ⁠ 1 / 60 ⁠ radian. One "diameter part" is approximately 0. ...

  9. Prime number theorem - Wikipedia

    en.wikipedia.org/wiki/Prime_number_theorem

    Graph of the number of primes ending in 1, 3, 7, and 9 up to n for n < 10 000. Another example is the distribution of the last digit of prime numbers. Except for 2 and 5, all prime numbers end in 1, 3, 7, or 9. Dirichlet's theorem states that asymptotically, 25% of all primes end in each of these four digits.