frequency distribution

frequency distribution
the correspondence of a set of frequencies with the set of categories, intervals, or values into which a population is classified.
[1890-95]

* * *

In statistics, a graph or data set organized to show the frequency of occurrence of each possible outcome of a repeatable event observed many times.

Simple examples are election returns and test scores listed by percentile. A frequency distribution can be graphed as a histogram or pie chart. For large data sets, the stepped graph of a histogram is often approximated by the smooth curve of a distribution function (called a density function when normalized so that the area under the curve is 1). The famed bell curve or normal distribution is the graph of one such function. Frequency distributions are particularly useful in summarizing large data sets and assigning probabilities.

* * *


Universalium. 2010.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • frequency distribution — n. a numerical tabulation in which the different observed values of a variable, or the different outcomes of an event, are grouped into classes, and the frequencies for each of these classes are given …   English World dictionary

  • Frequency distribution — In statistics, a frequency distribution is an arrangement of the values that one or more variables take in a sample. Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval, and… …   Wikipedia

  • Frequency Distribution — A representation, either in a graphical or tabular format, which displays the number of observations within a given interval. The intervals must be mutually exclusive and exhaustive. Frequency distributions are usually used within a statistical… …   Investment dictionary

  • frequency distribution — dažninis skirstinys statusas T sritis Standartizacija ir metrologija apibrėžtis Skirstinys, išreiškiantis sąsają tarp išmatuotų kintamojo dydžio verčių ir jų pasirodymo dažnio. atitikmenys: angl. frequency distribution vok. Frequenzverteilung, f; …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • frequency distribution — dažnių pasiskirstymas statusas T sritis fizika atitikmenys: angl. frequency distribution vok. Frequenzverteilung, f rus. распределение по частотам, n; частотное распределение, n pranc. distribution des fréquences, f …   Fizikos terminų žodynas

  • frequency distribution — dažninis skirstinys statusas T sritis fizika atitikmenys: angl. frequency distribution vok. Häufigkeitsverteilung, f rus. частотное распределение, n pranc. distribution de fréquence, f …   Fizikos terminų žodynas

  • frequency distribution — (in statistics) presentation of the characteristics (variable) of a series of individuals (e.g. their heights, weights, or blood pressures) in tabular form or as a histogram (bar chart) so as to indicate the proportion of the series that have… …   Medical dictionary

  • frequency distribution — (in statistics) presentation of the characteristics (variables) of a series of individuals (e.g. their heights, weights, or blood pressures) in tabular form or as a histogram (bar chart) so as to indicate the proportion of the series that have… …   The new mediacal dictionary

  • frequency distribution — noun a distribution of observed frequencies of occurrence of the values of a variable • Topics: ↑statistics • Hypernyms: ↑distribution, ↑statistical distribution …   Useful english dictionary

  • frequency distribution — noun Date: 1895 an arrangement of statistical data that exhibits the frequency of the occurrence of the values of a variable …   New Collegiate Dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”