PHP Класс MathPHP\Statistics\Distribution

Открытые методы

Метод	Описание
cumulativeFrequency ( array $values ) : array	Cumulative frequency distribution
cumulativeRelativeFrequency ( array $values ) : array	Cumulative relative frequency distribution Cumulative frequency distribution relative to the sample size.
frequency ( array $values ) : array	Frequency distribution A table that displays the frequency of various outcomes in a sample.
relativeFrequency ( array $values ) : array	Relative frequency distribution Frequency distribution relative to the sample size.
stemAndLeafPlot ( array $values, boolean $print = false ) : array	Stem and leaf plot Device for presenting quantitative data in a graphical format, similar to a histogram, to assist in visualizing the shape of a distribution.

Описание методов

cumulativeFrequency() публичный статический Метод

The values of the input array will be the keys of the result array. The cumulative frequency of the values will be the value of the result array for that key.

public static cumulativeFrequency ( array $values ) : array
$values	array	Ex: ( A, A, A, A, A, A, B, B, B, C )
Результат	array	cumulative frequency distribution Ex: ( A => 6, B => 9, C => 10 )

cumulativeRelativeFrequency() публичный статический Метод

Cumulative relative frequency = cumulative frequency / sample size The values of the input array will be the keys of the result array. The cumulative frequency of the values will be the value of the result array for that key.

public static cumulativeRelativeFrequency ( array $values ) : array
$values	array	Ex: ( A, A, A, A, A, A, B, B, B, C )
Результат	array	cumulative relative frequency distribution Ex: ( A => 0.6, B => 0.9, C => 1 )

frequency() публичный статический Метод

Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval. The table summarizes the distribution of values in the sample. https://en.wikipedia.org/wiki/Frequency_distribution The values of the input array will be the keys of the result array. The count of the values will be the value of the result array for that key.

public static frequency ( array $values ) : array
$values	array	Ex: ( A, A, A, B, B, C )
Результат	array	frequency distribution Ex: ( A => 3, B => 2, C => 1 )

relativeFrequency() публичный статический Метод

Relative Frequency = Frequency / Sample Size The values of the input array will be the keys of the result array. The relative frequency of the values will be the value of the result array for that key.

public static relativeFrequency ( array $values ) : array
$values	array	Ex: ( A, A, A, A, A, A, B, B, B, C )
Результат	array	relative frequency distribution Ex: ( A => 0.6, B => 0.3, C => 0.1 )

stemAndLeafPlot() публичный статический Метод

https://en.wikipedia.org/wiki/Stem-and-leaf_display Returns an array with the keys as the stems, and the values are arrays containing the leaves. Optional parameter to print the stem and leaf plot. Given input array: [ 44 46 47 49 63 64 66 68 68 72 72 75 76 81 84 88 106 ] Prints: 4 | 4 6 7 9 5 | 6 | 3 4 6 8 8 7 | 2 2 5 6 8 | 1 4 8 9 | 10 | 6

public static stemAndLeafPlot ( array $values, boolean $print = false ) : array
$values	array
$print	boolean	Optional setting to print the distribution
Результат	array	keys are the stems, values are the leaves