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  2. Dilution ratio - Wikipedia

    en.wikipedia.org/wiki/Dilution_ratio

    The "dilution factor" is an expression which describes the ratio of the aliquot volume to the final volume. Dilution factor is a notation often used in commercial assays.

  3. 15 puzzle - Wikipedia

    en.wikipedia.org/wiki/15_puzzle

    The 15 puzzle (also called Gem Puzzle, Boss Puzzle, Game of Fifteen, Mystic Square and more) is a sliding puzzle. It has 15 square tiles numbered 1 to 15 in a frame that is 4 tile positions high and 4 tile positions wide, with one unoccupied position.

  4. Five whys - Wikipedia

    en.wikipedia.org/wiki/Five_whys

    Five whys (or 5 whys) is an iterative interrogative technique used to explore the cause-and-effect relationships underlying a particular problem. [1] The primary goal of the technique is to determine the root cause of a defect or problem by repeating the question "why?"

  5. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    NYT Strands Spangram Answer Today. Today's spangram answer on Wednesday, January 15, 2025, is WHALES. What Are Today’s NYT Strands Answers, Word List for Wednesday, January 15? BELUGA. HUMPBACK ...

  6. Google Books Ngram Viewer - Wikipedia

    en.wikipedia.org/wiki/Google_Books_Ngram_Viewer

    The program can search for a word or a phrase, including misspellings or gibberish. [5] The n-grams are matched with the text within the selected corpus, and if found in 40 or more books, are then displayed as a graph. [6] The Google Books Ngram Viewer supports searches for parts of speech and wildcards. [6] It is routinely used in research. [7 ...

  7. Word problem (mathematics education) - Wikipedia

    en.wikipedia.org/wiki/Word_problem_(mathematics...

    Word problem from the Līlāvatī (12th century), with its English translation and solution. In science education, a word problem is a mathematical exercise (such as in a textbook, worksheet, or exam) where significant background information on the problem is presented in ordinary language rather than in mathematical notation.

  8. Google Dictionary - Wikipedia

    en.wikipedia.org/wiki/Google_Dictionary

    The service also contains pronunciation audio, Google Translate, a word origin chart, Ngram Viewer, and word games, among other features for the English-language version. [ 4 ] [ 5 ] Originally available as a standalone service, it was integrated into Google Search, with the separate service discontinued in August 2011.

  9. Westgard rules - Wikipedia

    en.wikipedia.org/wiki/Westgard_Rules

    Rule Criteria Suspected Example 1 2s: One measurement exceeds 2 standard deviations either above or below the mean of the reference range.: Inaccuracy and/or imprecision: 1 3s: One measurement exceeds 3 standard deviations either above or below the mean of the reference range.