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  2. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.

  3. Signal strength and readability report - Wikipedia

    en.wikipedia.org/wiki/Signal_strength_and...

    A signal strength and readability report is a standardized format for reporting the strength of the radio signal and the readability (quality) of the radiotelephone (voice) or radiotelegraph (Morse code) signal transmitted by another station as received at the reporting station's location and by their radio station equipment.

  4. Plus–minus sign - Wikipedia

    en.wikipedia.org/wiki/Plus–minus_sign

    For example, 5.7 ± 0.2 may be anywhere in the range from 5.5 to 5.9 inclusive. In scientific usage, it sometimes refers to a probability of being within the stated interval, usually corresponding to either 1 or 2 standard deviations (a probability of 68.3% or 95.4% in a normal distribution).

  5. Star (classification) - Wikipedia

    en.wikipedia.org/wiki/Star_(classification)

    In 1915, Edward O'Brien began editing The Best American Short Stories.This annual compiled O'Brien's personal selection of the previous year's best short stories. O'Brien claimed to read as many as 8,000 stories a year, and his editions contained lengthy tabulations of stories and magazines, ranked on a scale of zero to three stars, representing O'Brien's notion of their "literary permanence."

  6. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    The ambulance does not use lights and sirens to respond. An example of this response code is a broken leg. Code 3: A non-urgent routine case. These include cases such as a person with ongoing back pain but no recent injury. Source. Additional codes are used for internal purposes.

  7. Odds - Wikipedia

    en.wikipedia.org/wiki/Odds

    There are 2 out of 15 chances in favour of blue, 13 out of 15 against blue. In probability theory and statistics , where the variable p is the probability in favor of a binary event, and the probability against the event is therefore 1- p , "the odds" of the event are the quotient of the two, or p 1 − p {\displaystyle {\frac {p}{1-p}}} .

  8. Instagram reveals top emojis, explains what they really mean

    www.aol.com/news/2015-05-06-instagram-reveals...

    Instagram found that emoji means "#sistersforlife," "#sisterfromanothermister" or "#bestiesfortheresties." The hands in the air emoji is a bit more confusing, standing for anything from "#waitonit ...

  9. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr or 3 σ, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean ...