**null hypothesis** — ➔ hypothesis * * * null hypothesis UK US noun [S] ► a theory that states that two groups that are being tested will be expected to show the same results until this is proved not to be true … Financial and business terms

**Null hypothesis** — For the periodical, see Null Hypothesis: The Journal of Unlikely Science. The practice of science involves formulating and testing hypotheses, assertions that are capable of being proven false using a test of observed data. The null hypothesis… … Wikipedia

**Null Hypothesis** — A type of hypothesis used in statistics that proposes that no statistical significance exists in a set of given observations. The null hypothesis attempts to show that no variation exists between variables, or that a single variable is no… … Investment dictionary

**null hypothesis** — noun A hypothesis set up to be nullified or refuted in order to support an alternative hypothesis. When used, the null hypothesis is presumed true until statistical evidence in the form of a hypothesis test indicates otherwise. Therefore, the… … Wiktionary

**null hypothesis** — noun Etymology: null (I) : a statistical hypothesis to be tested and accepted or rejected in favor of an alternative; specifically : the hypothesis that an observed difference (as between the means of two samples) is due to chance alone and not… … Useful english dictionary

**null hypothesis** — see significance * * * the particular hypothesis under investigation; termed null because it frequently asserts a lack of effect or of difference. Symbol H0. Cf. alternative h … Medical dictionary

**null hypothesis** — (in the statistical testing of a hypothesis) the hypothesis to be tested. Cf. alternative hypothesis. [1930 35] * * * … Universalium

**null hypothesis** — /nʌl haɪˈpɒθəsəs/ (say nul huy pothuhsuhs) noun a hypothesis which is set up so that it can be proved wrong in order to establish a support for an alternative hypothesis which the experimenter believes to be true … Australian English dictionary

**null hypothesis** — noun (in a statistical test) the hypothesis that any observed differences between two populations are due to sampling or experimental error … English new terms dictionary

**null hypothesis** — The principle underlying significance tests , which proposes that any differences observed between two samples, or sub sections of one sample, are in fact due to random sampling error rather than to real differences … Dictionary of sociology