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Blind, blind experiment
| Glossary of Statistical Terms |
In a blind experiment, the subjects do not know whether they are in the treatment group or the control group. in order to have a blind experiment with human subjects, it is usually necessary to administer a placebo to the control group.
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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
Administer, английский
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Cluster sample, английский
- In a cluster sample, the sampling unit is a collection of population units, not single population units. for example, techniques for adjusting the u.s. census start with a sample of geographic blocks, then (try to) enumerate all inhabitants of the blocks in the sample to obtain a sample of people. this is an example of a cluster sample. (the blocks are chosen separately from different strata, so the overall design is a stratified cluster sample.)
- Гнездовая выборка
Joint probability distribution, английский
If x1, x2, … , xk are random variables defined for the same experiment, their joint probability distribution gives the probability of events determined by the collection of random variables: for any collection of sets of numbers {a1, … , ak}, the joint probability distribution determines
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