Element index for package Math_Stats
[ a ]
[ c ]
[ f ]
[ g ]
[ k ]
[ m ]
[ s ]
[ v ]
[ _ ]
_
- $_data
- in file stats.class.php, variable Math_Stats::$_data
The simple or cummulative data set.
- $_dataOption
- in file stats.class.php, variable Math_Stats::$_dataOption
Flag for data type, one of STATS_DATA_SIMPLE or STATS_DATA_CUMMULATIVE.
- $_nullOption
- in file stats.class.php, variable Math_Stats::$_nullOption
Flag for null handling options.
- _validate
- in file stats.class.php, method Math_Stats::_validate()
Utility function to validate the data and modify it according to the current null handling option
- __sumabsdev
- in file stats.class.php, method Math_Stats::__sumabsdev()
Utility function to calculate: SUM { | xi - mean | }
- __sumdiff
- in file stats.class.php, method Math_Stats::__sumdiff()
Utility function to calculate: SUM { (xi - mean)^n }
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a
- absDev
- in file stats.class.php, method Math_Stats::absDev()
Calculates the absolute deviation of the data points in the set Handles cummulative data sets correctly
- absDevWithMean
- in file stats.class.php, method Math_Stats::absDevWithMean()
Calculates the absolute deviation of the data points in the set given a fixed mean (average) value.
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c
- calc
- in file stats.class.php, method Math_Stats::calc()
Calculates the basic or full statistics for the data set
- calcBasic
- in file stats.class.php, method Math_Stats::calcBasic()
Calculates a basic set of statistics
- calcFull
- in file stats.class.php, method Math_Stats::calcFull()
Calculates a full set of statistics
- coeffOfVariation
- in file stats.class.php, method Math_Stats::coeffOfVariation()
Calculates the coefficient of variation of a data set. The coefficient of variation measures the spread of a set of data as a proportion of its mean.
- count
- in file stats.class.php, method Math_Stats::count()
Calculates the number of data points in the set Handles cummulative data sets correctly
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f
- frequency
- in file stats.class.php, method Math_Stats::frequency()
Calculates the value frequency table of a data set.
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g
- getData
- in file stats.class.php, method Math_Stats::getData()
Returns the data which might have been modified according to the current null handling options.
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k
- kurtosis
- in file stats.class.php, method Math_Stats::kurtosis()
Calculates the kurtosis of the data distribution in the set The kurtosis measures the degrees of peakedness of a distribution.
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m
- Math_Stats
- in file stats.class.php, class Math_Stats
A class to calculate descriptive statistics from a data set.
- Math_Stats
- in file stats.class.php, method Math_Stats::Math_Stats()
Constructor for the class
- max
- in file stats.class.php, method Math_Stats::max()
Calculates the maximum of a data set.
- mean
- in file stats.class.php, method Math_Stats::mean()
Calculates the mean (average) of the data points in the set Handles cummulative data sets correctly
- median
- in file stats.class.php, method Math_Stats::median()
Calculates the median of a data set.
- midrange
- in file stats.class.php, method Math_Stats::midrange()
Calculates the midrange of a data set.
- min
- in file stats.class.php, method Math_Stats::min()
Calculates the minimum of a data set.
- mode
- in file stats.class.php, method Math_Stats::mode()
Calculates the mode of a data set.
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s
- stats.class.php
- procedural page stats.class.php
- setData
- in file stats.class.php, method Math_Stats::setData()
Sets and verifies the data, checking for nulls and using the current null handling option
- setNullOption
- in file stats.class.php, method Math_Stats::setNullOption()
Sets the null handling option.
- skewness
- in file stats.class.php, method Math_Stats::skewness()
Calculates the skewness of the data distribution in the set The skewness measures the degree of asymmetry of a distribution, and is related to the third central moment of a distribution.
- stats
- in file stats.class.php, function stats()
- STATS_BASIC
- in file stats.class.php, constant STATS_BASIC
STATS_BASIC to generate the basic descriptive statistics
- STATS_DATA_CUMMULATIVE
- in file stats.class.php, constant STATS_DATA_CUMMULATIVE
STATS_DATA_CUMMULATIVE for an associative array of frequency values,
- STATS_DATA_SIMPLE
- in file stats.class.php, constant STATS_DATA_SIMPLE
STATS_DATA_SIMPLE for an array of numeric values e.g.
- STATS_FULL
- in file stats.class.php, constant STATS_FULL
STATS_FULL to generate also higher moments, mode, median, etc.
- STATS_IGNORE_NULL
- in file stats.class.php, constant STATS_IGNORE_NULL
STATS_IGNORE_NULL, ignore null values and prune them FROM the data.
- STATS_REJECT_NULL
- in file stats.class.php, constant STATS_REJECT_NULL
STATS_REJECT_NULL, reject data sets with null values.
- STATS_USE_NULL_AS_ZERO
- in file stats.class.php, constant STATS_USE_NULL_AS_ZERO
STATS_USE_NULL_AS_ZERO, assign the value of 0 (zero) to null values.
- stDev
- in file stats.class.php, method Math_Stats::stDev()
Calculates the standard deviation (unbiased) of the data points in the set Handles cummulative data sets correctly
- stDevWithMean
- in file stats.class.php, method Math_Stats::stDevWithMean()
Calculates the standard deviation (unbiased) of the data points in the set given a fixed mean (average) value.
- sum
- in file stats.class.php, method Math_Stats::sum()
Calculates SUM { xi } Handles cummulative data sets correctly
- sum2
- in file stats.class.php, method Math_Stats::sum2()
Calculates SUM { (xi)^2 } Handles cummulative data sets correctly
- sumN
- in file stats.class.php, method Math_Stats::sumN()
Calculates SUM { (xi)^n } Handles cummulative data sets correctly
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v
- variance
- in file stats.class.php, method Math_Stats::variance()
Calculates the variance (unbiased) of the data points in the set Handles cummulative data sets correctly
- varianceWithMean
- in file stats.class.php, method Math_Stats::varianceWithMean()
Calculates the variance (unbiased) of the data points in the set given a fixed mean (average) value.
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