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De morgan`s laws
| Glossary of Statistical Terms |
De morgan`s laws are identities involving logical operations: the negation of a conjunction is logically equivalent to the disjunction of the negations, and the negation of a disjunction is logically equivalent to the conjunction of the negations. in symbols, !(p & q) = !p | !q and !(p | q) = !p & !q.
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Operations, английский
- Research, incorporated фирма «оперейшнз ресерч ивкорпо- рейтед»
- Field movements, whether offensive or defensive.
- Операционный отдел (в инвестиционном банке)
Conjunction, английский
- N союз coordinating ~ сочинительный союз (ант. subordinating ~) subordinating ~ подчинительный союз (ант. coordinating ~)
- In nautical astronomy, is when two bodies have the same longitude or right ascension.
- Конъюнкция; логическое умножение
Equivalent, английский
- Эквивалент; эквивалентный
- Эквивалент (согласно так называемой доктрине эквивалентов, объект, по существу выполняющий ту же функцию тем же способом и обеспечивающий одинаковый эффект, считается эквивалентом)
- Эквивалент (согласно так называемой доктрине эквивалентов, объект, по существу выполняющий ту же
- N эквивалент; ~-lacking безэквивалентный; mono~ моноэквивалент; multi-~ мультиэквивалент | a эквивалентный translation, word absolute ~ абсолютный эквивалент occasional ~ окказиональный эквивалент regular ~ постоянный эквивалент variable ~ переменный эквивалент 1 “thunder”, образованное от “thunor”. 2 крупное литературное произведение эпического жанра; сложная, продолжительная история, включающая рад крупных событий. 3 раздел философии, изучающий основания знания. 4 повтор в конце смежных отрезков текста: “in 1931, ten years ago, japan invaded manchukuo – without warning. in 1935, italy invaded ethiopia – without warning. in 1938, hitler occupied austria – without warning. in 1939, hitler invaded czechoslovakia – without warning. later in 1939, hitler invaded poland – without warning. and now japan has attacked malaya and thailand – and the united states – without warning.” franklin d. roosevelt. 5 добавление этимологически не обусловленных звуков в конце слова.
- Эквивалент || эквивалентный
Disjunction, английский
- Disyunción
- N разрыв; разделение, разъединение
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Sd line, английский
For a scatterplot, a line that goes through the point of averages, with slope equal to the ratio of the standard deviations of the two plotted variables. if the variable plotted on the horizontal axis is called x and the variable plotted on the vertical axis is called y, the slope of the sd line is the sd of y, divided by the sd of x.
Fisher`s exact test (for the equality of two percentages), английский
Consider two populations of zeros and ones. let p1 be the proportion of ones in the first population, and let p2 be the proportion of ones in the second population. we would like to test the null hypothesis that p1 = p2 on the basis of a simple random sample from each population. let n1 be the size of the sample from population 1, and let n2 be the size of the sample from population 2. let g be the total number of ones in both samples. if the null hypothesis be true, the two samples are like one larger sample from a single population of zeros and ones. the allocation of ones between the two samples would be expected to be proportional to the relative sizes of the samples, but would have some chance variability. conditional on g and the two sample sizes, under the null hypothesis, the tickets in the first sample are like a random sample of size n1 without replacement from a collection of n = n1 + n2 units of which g are labeled with ones. thus, under the null hypothesis, the number of tickets labeled with ones in the first sample has (conditional on g) an hypergeometric distribution with parameters n, g, and n1. fisher`s exact test uses this distribution to set the ranges of observed values of the number of ones in the first sample for which we would reject the null hypothesis.
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