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  2. Barnard's test - Wikipedia

    en.wikipedia.org/wiki/Barnard's_test

    Under pressure from Fisher, Barnard retracted his test in a published paper, [8] however many researchers prefer Barnard’s exact test over Fisher's exact test for analyzing 2 × 2 contingency tables, [9] since its statistics are more powerful for the vast majority of experimental designs, whereas Fisher’s exact test statistics are conservative, meaning the significance shown by its p ...

  3. Millennium Prize Problems - Wikipedia

    en.wikipedia.org/wiki/Millennium_Prize_Problems

    The conjecture is that there is a simple way to tell whether such equations have a finite or infinite number of rational solutions. More specifically, the Millennium Prize version of the conjecture is that, if the elliptic curve E has rank r , then the L -function L ( E , s ) associated with it vanishes to order r at s = 1 .

  4. Models of communication - Wikipedia

    en.wikipedia.org/wiki/Models_of_communication

    Transaction models depart from interaction models in two ways. On the one hand, they understand sending and responding as simultaneous processes. This can be used to describe how listeners use non-verbal communication, like body posture and facial expressions, to give some form of feedback. This way, they can signal whether they agree with the ...

  5. Is unconditional love actually healthy? - AOL

    www.aol.com/lifestyle/unconditional-love...

    We define unconditional love, and with the help of experts explain whether or not it's healthy, good, bad, or even feasible.

  6. Barnlund's model of communication - Wikipedia

    en.wikipedia.org/wiki/Barnlund's_model_of...

    Barnlund's model of communication is one of the most well-known transactional models of communication. It was published by Dean Barnlund in his 1970 article A Transactional Model of Communication. [8] [15] [21] It is based on the idea that there are countless external and internal cues present. Communication consists in decoding them by ...

  7. Validity (logic) - Wikipedia

    en.wikipedia.org/wiki/Validity_(logic)

    There needs to be a relationship established between the premises i.e., a middle term between the premises. If you just have two unrelated premises there is no argument. Notice some of the terms repeat: men is a variation man in premises one and two, Socrates and the term mortal repeats in the conclusion.

  8. If and only if - Wikipedia

    en.wikipedia.org/wiki/If_and_only_if

    The corresponding logical symbols are "", "", [6] and , [10] and sometimes "iff".These are usually treated as equivalent. However, some texts of mathematical logic (particularly those on first-order logic, rather than propositional logic) make a distinction between these, in which the first, ↔, is used as a symbol in logic formulas, while ⇔ is used in reasoning about those logic formulas ...

  9. Contraposition - Wikipedia

    en.wikipedia.org/wiki/Contraposition

    In mathematics, proof by contrapositive, or proof by contraposition, is a rule of inference used in proofs, where one infers a conditional statement from its contrapositive. [15] In other words, the conclusion "if A , then B " is inferred by constructing a proof of the claim "if not B , then not A " instead.