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Chi-squared statistic
| Statistic terms |
[named by e.s. pearson ()?]. this is a long-established test statistic for measuring the extent to which a set of categorical outcomes depart from a hypothesised set of probabilities. it is calculated as a sum of terms over the available categories, where
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Chi-square, английский
Chi-square curve, английский
The chi-square curve is a family of curves that depend on a parameter called degrees of freedom (d.f.). the chi-square curve is an approximation to the probability histogram of the chi-square statistic for multinomial model if the expected number of outcomes in each category is large. the chi-square curve is positive, and its total area is 100%, so we can think of it as the probability histogram of a random variable. the balance point of the curve is d.f., so the expected value of the corresponding random variable would equal d.f.. the standard error of the corresponding random variable would be (2×d.f.)½. as d.f. grows, the shape of the chi-square curve approaches the shape of the normal curve. this page shows the chi-square curve.
Chi-square curve., английский
The chi-square curve is a family of curves that depend on a parameter called degrees of freedom (d.f.). the chi-square curve is an approximation to the probability histogram of the chi-square statistic for multinomial model if the expected number of outco
Chi-square distribution, английский
- The chi-square distribution is defined by:
- Распределение хи-квадрат. см. distribution (распределение).
- Распределение хи-квадрат. это распределение может рассматриваться как распределение суммы квадратов v независимых нормиро-ванных случайных величин, распределенных по нормальному закону. параметр v означает число степеней свободы [23].
Chi-square statistic, английский
The chi-square statistic is used to measure the agreement between categorical data and a multinomial model that predicts the relative frequency of outcomes in each possible category. suppose there are n independent trials, each of which can result in one of k possible outcomes. suppose that in each trial, the probability that outcome i occurs is pi, for i = 1, 2, … , k, and that these probabilities are the same in every trial. the expected number of times outcome 1 occurs in the n trials is n×p1; more generally, the expected number of times outcome i occurs is
Chi-square statistic., английский
The chi-square statistic is used to measure the agreement between categorical data and a multinomial model that predicts the relative frequency of outcomes in each possible category. suppose there are n independent trials, each of which can result in one
Chi-squared distribution, английский
Where expected frequencies are sufficiently high, hypothesised distributions of counts may be approximated by a normal distribution rather than an exact binomial distribution. the corresponding distribution of the chi-squared statistic can be derived alge
Statistic, английский
- A number or code derived by a prior-defined consistent process of calculation, from a set of data. also see : algorithm(1), test statistic.
- A number that can be computed from data, involving no unknown parameters. as a function of a random sample, a statistic is a random variable. statistics are used to estimate parameters, and to test hypotheses.
Statistic process control;s.p.c., английский
Controle statistique de procédé
Statistic process control;s.p.c., английский
Statistic., английский
A number that can be computed from data, involving no unknown parameters. as a function of a random sample, a statistic is a random variable. statistics are used to estimate parameters, and to test hypotheses.
Statistica [ae, f], латинский
Statistical, английский
Statistical account, английский
A classifier of economic resource quantity used to classify debit or credit entries in an accounting system.
Statistical agency, английский
Статистический орган; статистическое учреждение
Statistical analysis, английский
- Статистический анализ
- Статистический анализ. анализ данных клинического исследования с применением методов и тестов, установленных в протоколе (см. также statistical analytical plan).
- The science of collecting, exploring, and presenting data to draw conclusions of underlying patterns and trends.
Statistical analysis system, английский
Statistical analysis system;, русский
Statistical analytical plan, английский
Statistical analytical plan (sap), английский
План статистического анализа. документ, который содержит подробное техническое описание принципиальных подходов к анализу, определенному в протоколе, а также включает детальное описание методов выполнения статистического анализа первичных (основных) и вторичных (дополнительных) переменных, а также других данных.
Established, английский
Установленный
Categories, английский
- A feature that allows the user to apply custom or default markers to items (e.g. outlook messages or onenote content) in order to categorize information for easy retrieval and sorting.
- A list of categories that developers select from to make their app more discoverable.
- A list of different types of xbox music application contents, such as games, music+video, lifestyle.
- The section of the store that shows subgroups of apps and games, grouped by intended use or function.
- Flexible and rigid. borescope, ultraviolet: borescope with the ability to transmit ultraviolet radiation to the distal end while transmitting visible light to the eyepiece.
Hypothesis, английский
- A suggested explanation for an observation or experimental result, which is then refined or disproved by further investigation
- Гипотеза
- N гипотеза critical period ~ гипотеза критического периода linguistic relativity ~ гипотеза лингвистиче- ской относительности (син. sapir–whorf ~) localist ~ локалистская гипотеза3 nostratic ~ ностратическая гипотеза sapir–whorf ~ гипотеза сепира–уорфа (син. linguistic relativity ~) single segment ~ гипотеза единого сегмента
- Гипотеза. положение, которое предположительно отражает истину или которое используется как основа для аргументации того, что еще не доказано.
- Гипотеза; предположение; допущение hypothesis-driven управляемый гипотезами
- Гипотеза, предположение
- An assertion, proposition or statement about relations or constraints whose truth-value is as of yet unknown .but in principle determinable by tests involving generally empirical but also logical evidence. hypotheses are generally derived from theories or models and when these theories have some validity of their own, they consititute predictions. l&qh
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Mid-p, английский
[proposed by h.o lancaster(), and further promoted by g.a. barnard] this is a tail definition policy that the alpha value should be calculated as the sum of the proportion of the tail for data strictly more extreme than the outcome, plus one half of the p
Fisher test(1), английский
[named after the statistician ra fisher()]. this is an exact test(1) to examine whether the pattern of counts in a 2x2 cross classification departs from expectations based upon the marginal totals for the rows and columns. such a test is useful to examine
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