enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Letter frequency - Wikipedia

    en.wikipedia.org/wiki/Letter_frequency

    The California Job Case was a compartmentalized box for printing in the 19th century, sizes corresponding to the commonality of letters. The frequency of letters in text has been studied for use in cryptanalysis, and frequency analysis in particular, dating back to the Arab mathematician al-Kindi (c. 801–873 AD), who formally developed the method (the ciphers breakable by this technique go ...

  3. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    Excel maintains 15 figures in its numbers, but they are not always accurate; mathematically, the bottom line should be the same as the top line, in 'fp-math' the step '1 + 1/9000' leads to a rounding up as the first bit of the 14 bit tail '10111000110010' of the mantissa falling off the table when adding 1 is a '1', this up-rounding is not undone when subtracting the 1 again, since there is no ...

  4. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Excel offers many user interface tweaks over the earliest electronic spreadsheets; however, the essence remains the same as in the original spreadsheet software, VisiCalc: the program displays cells organized in rows and columns, and each cell may contain data or a formula, with relative or absolute references to other cells.

  5. Zipf's law - Wikipedia

    en.wikipedia.org/wiki/Zipf's_law

    The best known instance of Zipf's law applies to the frequency table of words in a text or corpus of natural language: . It is usually found that the most common word occurs approximately twice as often as the next common one, three times as often as the third most common, and so on.

  6. Spreadsheet - Wikipedia

    en.wikipedia.org/wiki/Spreadsheet

    Formulas in the B column multiply values from the A column using relative references, and the formula in B4 uses the SUM() function to find the sum of values in the B1:B3 range. A formula identifies the calculation needed to place the result in the cell it is contained within. A cell containing a formula, therefore, has two display components ...

  7. Frequency (statistics) - Wikipedia

    en.wikipedia.org/wiki/Frequency_(statistics)

    The ideal number of classes may be determined or estimated by formula: = = + ⁡ (log base 10), or by the square-root choice formula = where n is the total number of observations in the data. (The latter will be much too large for large data sets such as population statistics.)

  8. Fix problems sending AOL Mail - AOL Help

    help.aol.com/articles/aol-mail-troubleshooting

    While you should keep the firewall active most of the time, temporality turning it off can be helpful when trying to determine what is causing issues with your computer. While you will need to check out the software's website for instructions for most firewall providers, if you're using McAfee Internet Security Suite from AOL, you can find out ...

  9. Keyword density - Wikipedia

    en.wikipedia.org/wiki/Keyword_density

    When calculating the density of a keyword phrase, the formula would be (/), [1] where Nwp is the number of words in the phrase. So, for example, for a four-hundred word page about search engine optimization where "search engine optimization" is used four times, the keyword phrase density is (4*3/400)*100 or 3 percent.