enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable.The general form of its probability density function is [2] [3] = ().

  3. Natural number - Wikipedia

    en.wikipedia.org/wiki/Natural_number

    A total order on the natural numbers is defined by letting a ≤ b if and only if there exists another natural number c where a + c = b. This order is compatible with the arithmetical operations in the following sense: if a, b and c are natural numbers and a ≤ b, then a + c ≤ b + c and ac ≤ bc.

  4. Grading systems by country - Wikipedia

    en.wikipedia.org/wiki/Grading_systems_by_country

    When a professor wants to apply a more precise scale and ranking for students assessments, instead of using the full 1–10 scale (which would make the scale inconsistent with that of other professors), s/he may sometimes have recourse to a plethora of symbols and decimals: the range between 5 and 6 is then expressed, in ascending order, by 5 ...

  5. Roman numerals - Wikipedia

    en.wikipedia.org/wiki/Roman_numerals

    The Romans used a duodecimal rather than a decimal system for fractions, as the divisibility of twelve (12 = 2 2 × 3) makes it easier to handle the common fractions of 1 ⁄ 3 and 1 ⁄ 4 than does a system based on ten (10 = 2 × 5).

  6. Difference engine - Wikipedia

    en.wikipedia.org/wiki/Difference_engine

    That tab trips the carry lever in the back when "9" passes to "0" in the front during the add steps (Step 1 and Step 3). The notion of a mechanical calculator for mathematical functions can be traced back to the Antikythera mechanism of the 2nd century BC, while early modern examples are attributed to Pascal and Leibniz in the 17th century.

  7. 2008 United States Senate elections - Wikipedia

    en.wikipedia.org/wiki/2008_United_States_Senate...

    The 2008 United States Senate elections were held on November 4, 2008, with 35 of the 100 seats in the Senate being contested. 33 seats were up for regular elections; the winners were eligible to serve 6-year terms from January 3, 2009, to January 3, 2015, as members of Class 2.

  8. Hexadecimal - Wikipedia

    en.wikipedia.org/wiki/Hexadecimal

    Hexadecimal (also known as base-16 or simply hex) is a positional numeral system that represents numbers using a radix (base) of sixteen. Unlike the decimal system representing numbers using ten symbols, hexadecimal uses sixteen distinct symbols, most often the symbols "0"–"9" to represent values 0 to 9 and "A"–"F" to represent values from ten to fifteen.

  9. Tax - Wikipedia

    en.wikipedia.org/wiki/Tax

    Therefore, in order to stabilize sales, the seller absorbs more of the additional tax burden. For example, the seller might drop the price of the product to $0.70 so that, after adding in the tax, the buyer pays a total of $1.20, or $0.20 more than he did before the $0.50 tax was imposed.