“relative frequency”的概念、定义、翻译、参考文献-科学参考

relative frequency

Mathematics

The ratio n/N where n is the observed number of a particular event, and N is the number of trials. As N gets large, the weak law of large numbers says that n/N will tend to the probability of that event with a probability of 1. In cases where no way of calculating a probability exists, then the value of n/N can be used to estimate this probability. The larger the value of N, the better this statistic is as an estimator.

Statistics

See frequency.

Computer

The number of occurrences of a particular event, E, divided by the total number of observed events. An event is a particular instance of a class of observations, such as the result of the throw of dice, the recording of a man’s height, or the survival of a patient given a particular treatment. Relative frequency should be distinguished from probability. For example, the probability that a fair coin when tossed lands heads up is 0.5, whereas the relative frequency in a particular run of 100 tosses might be 47/100 or 0.47.
The set of relative frequencies for all the events that are possible is called a frequency distribution. It may be displayed graphically as a histogram.

单词	relative frequency
释义	relative frequency Mathematics The ratio n/N where n is the observed number of a particular event, and N is the number of trials. As N gets large, the weak law of large numbers says that n/N will tend to the probability of that event with a probability of 1. In cases where no way of calculating a probability exists, then the value of n/N can be used to estimate this probability. The larger the value of N, the better this statistic is as an estimator. Statistics See frequency. Computer The number of occurrences of a particular event, E, divided by the total number of observed events. An event is a particular instance of a class of observations, such as the result of the throw of dice, the recording of a man’s height, or the survival of a patient given a particular treatment. Relative frequency should be distinguished from probability. For example, the probability that a fair coin when tossed lands heads up is 0.5, whereas the relative frequency in a particular run of 100 tosses might be 47/100 or 0.47. The set of relative frequencies for all the events that are possible is called a frequency distribution. It may be displayed graphically as a histogram.
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