Stats.php File Reference

Go to the source code of this file.

Data Structures
class	Base

Namespaces
namespace	Math_Stats
	A class to calculate descriptive statistics from a data set.

Variables
const	STATS_BASIC = 1
	STATS_BASIC to generate the basic descriptive statistics.
const	STATS_FULL = 2
	STATS_FULL to generate also higher moments, mode, median, etc.
const	STATS_DATA_SIMPLE = 0
	STATS_DATA_SIMPLE for an array of numeric values.
const	STATS_DATA_CUMMULATIVE = 1
	STATS_DATA_CUMMULATIVE for an associative array of frequency values, where in each array entry, the index is the data point and the value the count (frequency): e.g.
const	STATS_REJECT_NULL = -1
	STATS_REJECT_NULL, reject data sets with null values.
const	STATS_IGNORE_NULL = -2
	STATS_IGNORE_NULL, ignore null values and prune them from the data.
const	STATS_USE_NULL_AS_ZERO = -3
	STATS_USE_NULL_AS_ZERO, assign the value of 0 (zero) to null values.

Variable Documentation

const STATS_BASIC = 1

STATS_BASIC to generate the basic descriptive statistics.

Definition at line 32 of file Stats.php.

Referenced by Base\calc().

const STATS_DATA_CUMMULATIVE = 1

STATS_DATA_CUMMULATIVE for an associative array of frequency values, where in each array entry, the index is the data point and the value the count (frequency): e.g.

$data = array(3=>4, 2.3=>5, 1.25=>6, 0.5=>3)

Definition at line 51 of file Stats.php.

Referenced by Base\__sumabsdev(), Base\__sumdiff(), Base\_validate(), Base\center(), Base\count(), Base\frequency(), Base\getData(), Base\harmonicMean(), Base\max(), Base\median(), Base\min(), Base\mode(), Base\percentile(), Base\productN(), Base\setData(), Base\studentize(), and Base\sumN().

const STATS_DATA_SIMPLE = 0

STATS_DATA_SIMPLE for an array of numeric values.

This is the default. e.g. $data = array(2,3,4,5,1,1,6);

Definition at line 44 of file Stats.php.

Referenced by Base\setData().

const STATS_FULL = 2

STATS_FULL to generate also higher moments, mode, median, etc.

Definition at line 36 of file Stats.php.

Referenced by Base\calc().

const STATS_IGNORE_NULL = -2

STATS_IGNORE_NULL, ignore null values and prune them from the data.

Any non-numeric value is considered a null in this context.

Definition at line 64 of file Stats.php.

Referenced by Base\_validate(), and Base\setNullOption().

const STATS_REJECT_NULL = -1

STATS_REJECT_NULL, reject data sets with null values.

This is the default. Any non-numeric value is considered a null in this context.

Definition at line 59 of file Stats.php.

Referenced by Base\_validate(), and Base\setNullOption().

const STATS_USE_NULL_AS_ZERO = -3

STATS_USE_NULL_AS_ZERO, assign the value of 0 (zero) to null values.

Any non-numeric value is considered a null in this context.

Definition at line 69 of file Stats.php.

Referenced by Base\_validate(), and Base\setNullOption().