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Randomized controlled experiment
| Glossary of Statistical Terms |
An experiment in which chance is deliberately introduced in assigning subjects to the treatment and control groups. for example, we could write an identifying number for each subject on a slip of paper, stir up the slips of paper, and draw slips without replacement until we have drawn half of them. the subjects identified on the slips drawn could then be assigned to treatment, and the rest to control. randomizing the assignment tends to decrease confounding of the treatment effect with other factors, by making the treatment and control groups roughly comparable in all respects but the treatment.
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Experiment, английский
- What distinguishes an experiment from an observational study is that in an experiment, the experimenter decides who receives the treatment.
- Эксперимент
- A scientific test conducted under set conditions the scientists did some experiments to try the new drug on a small sample of people.
- N экспе- римент (см. тж. test) associative ~ псхлнгв. ассоциативный экспе- римент psycholinguistic ~ психолингвистический экс- перимент
- Эксперимент; опыт, опытное исследование
Identifying, английский
Replacement, английский
- Замена
- Замещение; возмещение; воспроизводство^
- An operation to replace part of the body with an artificial part
- N подстановка replacive a замещающий, подстановочный
- Construction of a new pipe or underground utility located on or off the line of the existing systems, which serves the same function as the old system.
Identified, английский
Randomizing, английский
Хеширование; рандомизация; перемешивание; тасовка
Assignment, английский
- The receipt of an exercise notice by an options writer that requires the writer to sell (in the case of a call) or purchase (in the case of a put) the underlying security at the specified strike price.
- Choosing someone to do something. usually for: cases
- Under english law assignment is an agreement to transfer all of the rights (but not the obligations) under a contract to a new lender evidenced by an assignment agreement.
- Назначение; присвоение (кода, частоты)
- Правопередача; переуступка прав (передача правового титула изобретения, патента или заявки,эквивалентная продаже любого другого вида движимой собственности)
- The documentary transfer of title to cargo.
- Правопередача; переуступка прав (передача правового титула изобретения, патента или заявки, эквивалентная продаже любого другого вида движимой собственности)
- Поручение, назначение, выделение
- A designation that forms an association among objects.
- A process-related task that is delegated to a particular user.
- A unit of work that a student is expected to complete.
- This stores a value in a variable. an assignment statement has an assignment in it describing the storage of values in variables.
- Переуступка
- A transfer of ownership of a patent application or patent from one entity to another. all assignments should be recorded with the uspto assignment services division to maintain clear title to pending patent applications and patents.
- The transfer of property or rights from one party to another.
- An assignment is when the seller of a property signs over rights and obligations to that property to the buyer before the official closing.
- A transfer of property rights from one person to another, called the assignee. assumable mortgage
- Job or position
- Job or position a job, usually in a new location
Confounding, английский
When the differences between the treatment and control groups other than the treatment produce differences in response that are not distinguishable from the effect of the treatment, those differences between the groups are said to be confounded with the effect of the treatment (if any). for example, prominent statisticians questioned whether differences between individuals that led some to smoke and others not to (rather than the act of smoking itself) were responsible for the observed difference in the frequencies with which smokers and non-smokers contract various illnesses. if that were the case, those factors would be confounded with the effect of smoking. confounding is quite likely to affect observational studies and experiments that are not randomized. confounding tends to be decreased by randomization. see also simpson`s paradox.
Comparable, английский
Сравнимый; аналогичный
Deliberate, английский
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Uncontrolled experiment, английский
An experiment in which there is no control group; i.e., in which the method of comparison is not used: the experimenter decides who gets the treatment, but the outcome of the treated group is not compared with the outcome of a control group that does not receive treatment.
Certain event, английский
- An event is certain if its probability is 100%. even if an event is certain, it might not occur. however, by the complement rule, the chance that it does not occur is 0%.
- Достоверное событие
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