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 when using setData() $_data in file Stats.php, variable Base::$_data The simple or cummulative data set. $_dataExpanded in file Stats.php, variable Base::$_dataExpanded Expanded data set. Only set when cummulative data is being used. Null by default. $_dataOption in file Stats.php, variable Base::$_dataOption Flag for data type, one of STATS_DATA_SIMPLE or STATS_DATA_CUMMULATIVE. Null by default. $_nullOption in file Stats.php, variable Base::$_nullOption Flag for null handling options. One of STATS_REJECT_NULL, STATS_IGNORE_NULL or STATS_USE_NULL_AS_ZERO top ## a absDev in file Stats.php, method Base::absDev() Calculates the absolute deviation of the data points in the set Handles cummulative data sets correctly 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. Not used in calcBasic(), calcFull() 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 Handles cummulative data sets correctly 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 Handles cummulative data sets correctly 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 Handles cummulative data sets correctly top ## i interquartileMean in file Stats.php, method Base::interquartileMean() The interquartile mean is defined as the mean of the values left after discarding the lower 25% and top 25% ranked values, i.e.: interquartileRange in file Stats.php, method Base::interquartileRange() The interquartile range is the distance between the 75th and 25th percentiles. Basically the range of the middle 50% of the data set, 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 Handles cummulative data sets correctly 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) Handles cummulative data sets correctly productN in file Stats.php, method Base::productN() Calculates PROD { (xi)^n }, which is the product of all observations Handles cummulative data sets correctly 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), is defined as follows: 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 the current null handling option 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. This is the default. 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. This is the default. 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 Handles cummulative data sets correctly 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. Not used in calcBasic(), calcFull() 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. This will reset all pre-calculated values to their original (unset) defaults. sum in file Stats.php, method Base::sum() Calculates SUM { xi } Handles cummulative data sets correctly sum2 in file Stats.php, method Base::sum2() Calculates SUM { (xi)^2 } Handles cummulative data sets correctly sumN in file Stats.php, method Base::sumN() Calculates SUM { (xi)^n } Handles cummulative data sets correctly top ## v variance in file Stats.php, method Base::variance() Calculates the variance (unbiased) of the data points in the set Handles cummulative data sets correctly 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. Not used in calcBasic(), calcFull() or calc(). top Documentation generated on Fri, 12 Oct 2012 00:15:04 +0200 by phpDocumentor 1.4.4