“distribution”的概念、定义、翻译、参考文献-科学参考

distribution

Mathematics

The distribution of a random variable describes the probability of its taking a certain value, or a value within a certain interval, varies. It may be given by the cumulative distribution function. More commonly, the distribution of a discrete random variable is given by its probability mass function and that of a continuous random variable by its probability density function.

Statistics

The set of values of a set of data, possibly grouped into classes, together with their frequencies or relative frequencies. In the case of random variables the distribution is the set of possible values together with their probabilities in the discrete case and the probability density function in the case of a continuous variable.

Computer

See frequency distribution, probability distributions.

Electronics and Electrical Engineering

See Gaussian distribution; normal distribution.

Biology

In statistics, the relationship between the values in a data set and the relative frequency with which each value occurs, especially as presented in a table or graph. A normal or Gaussian distribution is a continuous distribution that is symmetrical around the mean value and in which a large majority (64%) of the observations fall within one standard deviation of the mean in either direction (and nearly all fall within two standard deviations); such a distribution forms the familiar symmetrical bell curve when plotted on a graph. In a skewed or asymmetrical distribution, by contrast, the observations are clustered on one side of the mean and spread out over a wider range on the other. See also significance.

Economics

1. The shares of income received by different sections of the community. The functional distribution of incomes refers to the shares of income derived from the services of labour, land, and capital. The personal income distribution refers to the relative number of personal incomes of different sizes.
2. The process of moving goods and services from producers to final consumers, via a network of wholesalers and retail shops.
3. See probability distribution.

单词	distribution
释义	distribution Mathematics The distribution of a random variable describes the probability of its taking a certain value, or a value within a certain interval, varies. It may be given by the cumulative distribution function. More commonly, the distribution of a discrete random variable is given by its probability mass function and that of a continuous random variable by its probability density function. Statistics The set of values of a set of data, possibly grouped into classes, together with their frequencies or relative frequencies. In the case of random variables the distribution is the set of possible values together with their probabilities in the discrete case and the probability density function in the case of a continuous variable. Computer See frequency distribution, probability distributions. Electronics and Electrical Engineering See Gaussian distribution; normal distribution. Biology In statistics, the relationship between the values in a data set and the relative frequency with which each value occurs, especially as presented in a table or graph. A normal or Gaussian distribution is a continuous distribution that is symmetrical around the mean value and in which a large majority (64%) of the observations fall within one standard deviation of the mean in either direction (and nearly all fall within two standard deviations); such a distribution forms the familiar symmetrical bell curve when plotted on a graph. In a skewed or asymmetrical distribution, by contrast, the observations are clustered on one side of the mean and spread out over a wider range on the other. See also significance. Economics 1. The shares of income received by different sections of the community. The functional distribution of incomes refers to the shares of income derived from the services of labour, land, and capital. The personal income distribution refers to the relative number of personal incomes of different sizes. 2. The process of moving goods and services from producers to final consumers, via a network of wholesalers and retail shops. 3. See probability distribution.
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