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  2. Alternative hypothesis - Wikipedia

    en.wikipedia.org/wiki/Alternative_hypothesis

    The statement that is being tested against the null hypothesis is the alternative hypothesis. [2] Alternative hypothesis is often denoted as H a or H 1. In statistical hypothesis testing, to prove the alternative hypothesis is true, it should be shown that the data is contradictory to the null hypothesis. Namely, there is sufficient evidence ...

  3. Hypothesis - Wikipedia

    en.wikipedia.org/wiki/Hypothesis

    The alternative hypothesis, as the name suggests, is the alternative to the null hypothesis: it states that there is some kind of relation. The alternative hypothesis may take several forms, depending on the nature of the hypothesized relation; in particular, it can be two-sided (for example: there is some effect, in a yet unknown direction) or ...

  4. Homoscedasticity and heteroscedasticity - Wikipedia

    en.wikipedia.org/wiki/Homoscedasticity_and...

    The null hypothesis of this chi-squared test is homoscedasticity, and the alternative hypothesis would indicate heteroscedasticity. Since the Breusch–Pagan test is sensitive to departures from normality or small sample sizes, the Koenker–Bassett or 'generalized Breusch–Pagan' test is commonly used instead.

  5. Null hypothesis - Wikipedia

    en.wikipedia.org/wiki/Null_hypothesis

    In this case, the null hypothesis is rejected and an alternative hypothesis is accepted in its place. If the data are consistent with the null hypothesis statistically possibly true, then the null hypothesis is not rejected. In neither case is the null hypothesis or its alternative proven; with better or more data, the null may still be rejected.

  6. Spandrel (biology) - Wikipedia

    en.wikipedia.org/wiki/Spandrel_(biology)

    Many secondary processes and actions come in addition to the main functions of the human brain. These secondary processes and thoughts can eventually turn into an adaptation or provide a fitness advantage to humans. Just because something is a secondary trait or byproduct of an adaptation does not mean it has no use.

  7. Definitions (Plato) - Wikipedia

    en.wikipedia.org/wiki/Definitions_(Plato)

    Definitions is a list of 184 terms important in early Platonism together with one or more brief definitions. Though not in alphabetical or any other simple order, it is possible to discern some features of the organization of the collection. Definitions 1–20 consist chiefly of terms from natural philosophy.

  8. Glossary of engineering: A–L - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_engineering:_A–L

    The new definition defines the elementary charge (the charge of the proton) as exactly 1.602 176 634 × 10 −19 coulombs. This would implicitly define the coulomb as 1 ⁄ 0.160 217 6634 × 10 18 elementary charges. Coulomb's law Coulomb's law, or Coulomb's inverse-square law, is a law of physics for quantifying Coulomb's force, or ...

  9. Theory - Wikipedia

    en.wikipedia.org/wiki/Theory

    The English word theory derives from a technical term in philosophy in Ancient Greek.As an everyday word, theoria, θεωρία, meant "looking at, viewing, beholding", but in more technical contexts it came to refer to contemplative or speculative understandings of natural things, such as those of natural philosophers, as opposed to more practical ways of knowing things, like that of skilled ...