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Mean, arithmetic mean
| Glossary of Statistical Terms |
The sum of a list of numbers, divided by the number of numbers. see also average.
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Sample sum, английский
The sum of a random sample from a population. the expected value of the sample sum is the sample size times the population mean. for sampling with replacement, the se of the sample sum is the population standard deviation, times the square-root of the sample size. for sampling without replacement, the se of the sample sum is the finite-population correction ((n−n)/(n−1))½ times the se of the sample sum for sampling with replacement, with n the size of the population and n the size of the sample.
Control group, английский
- The subjects in a controlled experiment who do not receive the treatment.
- A group of people who are not being treated but whose test data are used as a comparison in a study
- Контрольная группа
- Контрольная группа в исследовании случай-контроль группа лиц, у которых исследуемое состояние отсутствует или которая не подвергалась воздействию какого-либо фактора.
- Контрольная группа. в контролируемых клинических исследованиях (см. controlled study) группа субъектов, которые не получают лечения или получают стандартное лечение или плацебо.
- A set of controls that are conceptually or logically related. controls that are conceptually related are usually viewed together but do not necessarily affect each other. controls that are logically related affect each other.
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