What's the difference between hypothesis and speculation?

Hypothesis


Definition:

  • (n.) A supposition; a proposition or principle which is supposed or taken for granted, in order to draw a conclusion or inference for proof of the point in question; something not proved, but assumed for the purpose of argument, or to account for a fact or an occurrence; as, the hypothesis that head winds detain an overdue steamer.
  • (n.) A tentative theory or supposition provisionally adopted to explain certain facts, and to guide in the investigation of others; hence, frequently called a working hypothesis.

Example Sentences:

  • (1) The hypothesis that proteins are critical targets in free radical mediated cytolysis was tested using U937 mononuclear phagocytes as targets and iron together with hydrogen peroxide to generate radicals.
  • (2) The generally accepted hypothesis is a coronary spasm but a direct cardiotoxicity of 5-FU cannot be.
  • (3) The results of our microscopic model confirm that the continuum hypothesis used in our previous macroscopic model is reasonable.
  • (4) The authors empirically studied the self-medication hypothesis of drug abuse by examining drug effects and motivation for drug use in 494 hospitalized drug abusers.
  • (5) Evidence is presented in support of the hypothesis that fresh bat guano serves as a means of pathogenic fungi dissemination in caves.
  • (6) The present study was designed to test the hypothesis that the decreased Epi response following ET was due to 1) depletion of adrenal Epi content such that adrenomedullary stimulation would not release Epi, 2) decreased Epi release with direct stimulation, i.e., desensitization of release, or 3) decreased afferent signals generated by ET itself.
  • (7) Implications of the theory for hypothesis testing, theory construction, and scales of measurement are considered.
  • (8) The 14-fold increase in prolonged apnea frequency immediately following regurgitation supports the hypothesis for a causal relationship between apnea and regurgitation.
  • (9) The hypothesis that experimentally determined survival times of Treponema pallidum in stored donor blood could be related to the number of treponemes initially present in the treponeme-blood mixtures was investigated by inoculating rabbits with three graded doses of treponemes suspended in donor blood and stored at 4 degrees C for various periods of time.
  • (10) Following the hypothesis that infertile patients may present emotional conflicts with regard to the wish of having a child, psychodynamic interviews were carried out with 116 infertile couples concomitantly with their first consultation at the Sterility Department.
  • (11) Results were inconsistent with both the feature detector fatigue and response bias hypothesis.
  • (12) This hypothesis is supported by our recent report that immunoreactive human PRL (ir-hPRL) is produced by and required for the continuous growth of sfRamos, a Burkitt tumor serum-free cell line.
  • (13) This hypothesis is difficult to substantiate with direct measurements using human subjects.
  • (14) We tested the hypothesis that furosemide interferes with energy generation in the cochlea, and determined its effect on CO2 formation from glucose and glyceroaldehyde-3-phosphate dehydrogenase (GAPDH) activity by examining biochemical and histochemical changes in the cochlea, the kidney, and the liver.
  • (15) Our data support the hypothesis that evoked and epileptiform magnetic fields result from intradendritic currents oriented perpendicular to the cortical surface.
  • (16) This observation seriously challenges the hypothesis that SCE cancellation results as a consequence of persistence of the lesions induced by these agents.
  • (17) The hypothesis that the standard acoustic startle habituation paradigm contains the elements of Pavlovian fear conditioning was tested.
  • (18) In this study we tested the hypothesis that regardless of concentration pattern and exposure rate the same exposure dose of O3 will induce the same spirometric response.
  • (19) We put forward the hypothesis that the agglutinability in acriflavine, together with the PAGE profile type II, may be associated with particular structures responsible for virulence.
  • (20) After an introductory note on primary preventive intervention of breast cancer during adulthood, the author defends and extends a hypothesis that relates most of the known risk factors for this disease to the development of preneoplastic lesions in the breast.

Speculation


Definition:

  • (n.) The act of speculating.
  • (n.) Examination by the eye; view.
  • (n.) Mental view of anything in its various aspects and relations; contemplation; intellectual examination.
  • (n.) The act or process of reasoning a priori from premises given or assumed.
  • (n.) The act or practice of buying land, goods, shares, etc., in expectation of selling at a higher price, or of selling with the expectation of repurchasing at a lower price; a trading on anticipated fluctuations in price, as distinguished from trading in which the profit expected is the difference between the retail and wholesale prices, or the difference of price in different markets.
  • (n.) Any business venture in involving unusual risks, with a chance for large profits.
  • (n.) A conclusion to which the mind comes by speculating; mere theory; view; notion; conjecture.
  • (n.) Power of sight.
  • (n.) A game at cards in which the players buy from one another trumps or whole hands, upon a chance of getting the highest trump dealt, which entitles the holder to the pool of stakes.

Example Sentences:

  • (1) It did the job of triggering growth, but it also fueled real-estate speculation, similar to what was going on in the mid-2000s here.” Slowing economic growth may be another concern.
  • (2) It has been speculated that these cigarette smoke-induced alterations contribute to the depressed pulmonary defense mechanisms commonly demonstrated in smokers.
  • (3) We speculate that this cleavage event is catalyzed by either a cryptic potyviral proteinase that requires a host factor or subcellular environment for activation, or possibly a host proteinase.
  • (4) 9.23pm GMT Expect the reporters to get even more speculative and desperate from hereon in.
  • (5) So it was speculated that the enhancement of pulmonary metastasis needs remaining of irradiated tumor in bodies of mice for a certain period.
  • (6) We speculate that intestinal injury may also induce or perpetuate arthritis by systemic distribution of inflammatory mediators produced by intestinal immune effector cells.
  • (7) We speculate that the preferential rupture of the H2B-H4 contact is of physiological significance.
  • (8) Such an explanation not only remains vague and speculative but deserves criticism also for being incomplete.
  • (9) One may speculate whether clinical conditions exist--apart from hereditary retinal dystrophies--in which the retina becomes more sensitive to light from strong artificial or natural sources, which are otherwise innoxious.
  • (10) The literature concerning the possible effects of tetracyclines on hemostasis with or without antecedent anticoagulation therapy is reviewed and the speculated mechanisms for such an interaction are discussed.
  • (11) Cable, once a leading critic of City speculation, insists the shares will go to responsible investors.
  • (12) "Getting a 95% loan to value mortgage lets you speculate on the expected house price increases a lot more than a 75% mortgage," he said.
  • (13) Thus one may speculate that endothelin plays a role in the coronary spasm which has been shown in patients with angina pectoris.
  • (14) Gerson Zweifach, general counsel for both News Corp and 21st Century Fox , Murdoch’s film and TV business, said: “We are grateful that this matter has been concluded and acknowledge the fairness and professionalism of the Department of Justice throughout this investigation.” It is understood there has been no background settlement with the Department of Justice in order to avoid a full-blown investigation, contrary to speculation in New York over a year ago that the company was looking at a possible payment of over $850m.
  • (15) Dealers speculated that Facebook's army of bankers had stepped in to stop the shares falling below $38, a move that would have landed the social network with a public relations disaster on its first day as a public company.
  • (16) If we were to have a plebiscite before the end of the year, and you were to reverse-engineer that, it would make interesting speculation about the timing of an election.” Abetz said in January he would need to see whether a plebiscite was “above board or whether the question is stacked” before deciding to heed any result in favour of marriage equality.
  • (17) Undoubtedly because new theories remain speculative when viewed from our own standpoint.
  • (18) Lack of transparency about the nature of the relationship between police and media also led to speculation and perceptions, whatever the facts, that caused "serious harm".
  • (19) The similarity of the low-K breathing pattern to that observed with reserpine administration together with the known relationships of K and catecholamine metabolism lead to the speculation that K depletion alters breathing via an effect on central catecholamine metabolism.
  • (20) Last week, Park offered a public apology after acknowledging Choi had edited some of her speeches and provided help with public relations, but South Korea’s media have speculated Choi played a much larger, secret role in government affairs.