Math_Stats

# Element index for package Math_Stats [ a ] [ b ] [ c ] [ f ] [ g ] [ h ] [ i ] [ k ] [ m ] [ p ] [ q ] [ r ] [ s ] [ v ] [ _ ] ## _ $_calculatedValues in file Stats.php, variable Base::$_calculatedValues Array for caching result values, should be reset $_data in file Stats.php, variable Base::$_data The simple or cummulative data set. $_dataExpanded in file Stats.php, variable Base::$_dataExpanded Expanded data set. is being used. $_dataOption in file Stats.php, variable Base::$_dataOption Flag for data type, one of STATS_DATA_SIMPLE or STATS_DATA_CUMMULATIVE. $_nullOption in file Stats.php, variable Base::$_nullOption Flag for null handling options. _validate in file Stats.php, method Base::_validate() Utility function to validate the data and modify it __calcAbsoluteDeviation in file Stats.php, method Base::__calcAbsoluteDeviation() Utility function to calculate the absolute deviation with or without __calcVariance in file Stats.php, method Base::__calcVariance() Utility function to calculate the variance with or without __format in file Stats.php, method Base::__format() Utility function to format a PEAR_Error to be used by calc(), __sumabsdev in file Stats.php, method Base::__sumabsdev() Utility function to calculate: SUM { | xi - mean | } __sumdiff in file Stats.php, method Base::__sumdiff() Utility function to calculate: SUM { (xi - mean)^n } top ## a absDev in file Stats.php, method Base::absDev() Calculates the absolute deviation of the data points in the set absDevWithMean in file Stats.php, method Base::absDevWithMean() Calculates the absolute deviation of the data points in the set given a fixed mean (average) value. or calc(). top ## b Base in file Stats.php, class Base A class to calculate descriptive statistics from a data set. top ## c calc in file Stats.php, method Base::calc() Calculates the basic or full statistics for the data set calcBasic in file Stats.php, method Base::calcBasic() Calculates a basic set of statistics calcFull in file Stats.php, method Base::calcFull() Calculates a full set of statistics center in file Stats.php, method Base::center() Transforms the data by substracting each entry from the mean. coeffOfVariation in file Stats.php, method Base::coeffOfVariation() Calculates the coefficient of variation of a data set. count in file Stats.php, method Base::count() Calculates the number of data points in the set top ## f frequency in file Stats.php, method Base::frequency() Calculates the value frequency table of a data set. top ## g geometricMean in file Stats.php, method Base::geometricMean() Calculates the geometrical mean of the data points in the set getData in file Stats.php, method Base::getData() Returns the data which might have been modified according to the current null handling options. top ## h harmonicMean in file Stats.php, method Base::harmonicMean() Calculates the harmonic mean of the data points in the set top ## i interquartileMean in file Stats.php, method Base::interquartileMean() The interquartile mean is defined as the mean of the values left interquartileRange in file Stats.php, method Base::interquartileRange() The interquartile range is the distance between the 75th and 25th percentiles. and thus is not affected by outliers or extreme values. top ## k kurtosis in file Stats.php, method Base::kurtosis() Calculates the kurtosis of the data distribution in the set The kurtosis measures the degrees of peakedness of a distribution. top ## m Math_Stats in file Stats.php, method Base::Math_Stats() Constructor for the class max in file Stats.php, method Base::max() Calculates the maximum of a data set. mean in file Stats.php, method Base::mean() Calculates the mean (average) of the data points in the set median in file Stats.php, method Base::median() Calculates the median of a data set. midrange in file Stats.php, method Base::midrange() Calculates the midrange of a data set. min in file Stats.php, method Base::min() Calculates the minimum of a data set. mode in file Stats.php, method Base::mode() Calculates the mode of a data set. top ## p percentile in file Stats.php, method Base::percentile() The pth percentile is the value such that p% of the a sorted data set is smaller than it, and (100 - p)% of the data is larger. product in file Stats.php, method Base::product() Calculates PROD { (xi) }, (the product of all observations) productN in file Stats.php, method Base::productN() Calculates PROD { (xi)^n }, which is the product of all observations top ## q quartileDeviation in file Stats.php, method Base::quartileDeviation() The quartile deviation is half of the interquartile range value quartiles in file Stats.php, method Base::quartiles() The quartiles are defined as the values that divide a sorted data set into four equal-sized subsets, and correspond to the 25th, 50th, and 75th percentiles. quartileSkewnessCoefficient in file Stats.php, method Base::quartileSkewnessCoefficient() The quartile skewness coefficient (also known as Bowley Skewness), quartileVariationCoefficient in file Stats.php, method Base::quartileVariationCoefficient() The quartile variation coefficient is defines as follows: top ## r range in file Stats.php, method Base::range() Calculates the range of the data set = max - min top ## s Stats.php procedural page Stats.php sampleCentralMoment in file Stats.php, method Base::sampleCentralMoment() Calculates the nth central moment (m{n}) of a data set. sampleRawMoment in file Stats.php, method Base::sampleRawMoment() Calculates the nth raw moment (m{n}) of a data set. setData in file Stats.php, method Base::setData() Sets and verifies the data, checking for nulls and using setNullOption in file Stats.php, method Base::setNullOption() Sets the null handling option. skewness in file Stats.php, method Base::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_BASIC in file Stats.php, constant STATS_BASIC STATS_BASIC to generate the basic descriptive statistics STATS_DATA_CUMMULATIVE in file Stats.php, constant STATS_DATA_CUMMULATIVE STATS_DATA_CUMMULATIVE for an associative array of frequency values, STATS_DATA_SIMPLE in file Stats.php, constant STATS_DATA_SIMPLE STATS_DATA_SIMPLE for an array of numeric values. STATS_FULL in file Stats.php, constant STATS_FULL STATS_FULL to generate also higher moments, mode, median, etc. STATS_IGNORE_NULL in file Stats.php, constant STATS_IGNORE_NULL STATS_IGNORE_NULL, ignore null values and prune them from the data. STATS_REJECT_NULL in file Stats.php, constant STATS_REJECT_NULL STATS_REJECT_NULL, reject data sets with null values. STATS_USE_NULL_AS_ZERO in file Stats.php, constant STATS_USE_NULL_AS_ZERO STATS_USE_NULL_AS_ZERO, assign the value of 0 (zero) to null values. stdErrorOfMean in file Stats.php, method Base::stdErrorOfMean() Calculates the standard error of the mean. stDev in file Stats.php, method Base::stDev() Calculates the standard deviation (unbiased) of the data points in the set stDevWithMean in file Stats.php, method Base::stDevWithMean() Calculates the standard deviation (unbiased) of the data points in the set given a fixed mean (average) value. or calc(). studentize in file Stats.php, method Base::studentize() Transforms the data by substracting each entry from the mean and dividing by its standard deviation. values to their original (unset) defaults. sum in file Stats.php, method Base::sum() Calculates SUM { xi } sum2 in file Stats.php, method Base::sum2() Calculates SUM { (xi)^2 } sumN in file Stats.php, method Base::sumN() Calculates SUM { (xi)^n } top ## v variance in file Stats.php, method Base::variance() Calculates the variance (unbiased) of the data points in the set varianceWithMean in file Stats.php, method Base::varianceWithMean() Calculates the variance (unbiased) of the data points in the set given a fixed mean (average) value. or calc(). top Documentation generated on Mon, 11 Jan 2010 08:03:27 +0100 by phpDocumentor 1.4.1