- Frequency (statistics)
Taking the fi for all i and tabulating or plotting them leads to a frequency distribution.
The relative frequency density of the occurrence of an event is the score divided by the total number of observations.
For example: If the lower extreme of the class you are measuring the density of is 15 and the upper extreme of the class you are measuring is 30, given a relative frequency of 0.0625, you would calculate the frequency density for this class to be:
- Relative frequency / (Upper extreme of class − lower extreme of class) = density
- 0.0625 / (30 − 15) = 0.0625 / 15 = 0.0041666.. That is: 0.00417 to 5 decimal places.
In biology, relative frequency is the occurrence of a single gene in a specific species that makes up a gene pool.
The limiting relative frequency of an event over a long series of trials is the conceptual foundation of the frequency interpretation of probability. In this framework, it is assumed that as the length of the series increases without bound, the fraction of the experiments in which we observe the event will stabilize. This interpretation is often contrasted with Bayesian probability.
Statistics Descriptive statisticsSummary tables Data collectionDesigning studiesUncontrolled studies Statistical inferenceFrequentist inferenceSpecific tests Correlation and regression analysisNon-standard predictorsPartition of variance Categorical, multivariate, time-series, or survival analysis Applications Category · Portal · Outline · Index
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frequency distribution — Statistics. 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… … Universalium
frequency — [frē′kwənsfrē′kwən sē] n. pl. frequencies [ME < Fr < L frequentia < frequens: see FREQUENT] 1. Obs. a) the condition of being crowded b) a crowd 2. the fact of occurring often or repeatedly; frequent occurrence 3 … English World dictionary
frequency curve — Statistics. a curve representing the frequency with which a variable assumes its values. [1890 95] * * * … Universalium
frequency polygon — Statistics. a frequency curve consisting of connected line segments formed by joining the midpoints of the upper edges of the rectangles in a histogram whose class intervals are of uniform length. [1895 1900] * * * … Universalium
frequency function — Statistics. See probability density function (def. 2). * * * … Universalium
frequency function — Statistics. See probability density function (def. 2) … Useful english dictionary
statistics — /steuh tis tiks/, n. 1. (used with a sing. v.) the science that deals with the collection, classification, analysis, and interpretation of numerical facts or data, and that, by use of mathematical theories of probability, imposes order and… … Universalium
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