Class Statistic

java.lang.Object
  Statistic

public class Statistic
extends java.lang.Object

Abstract data type to collect values and provide certain statistical properties of the collection.

Constructor Summary

Statistic(String name)
Constructor

Method Summary

void	collect(double value) Adds a value to the statistic collection
int	count() Retrieves the count of how many values collected so far
double	current() Retrieves the most recent value collected
double	highest() Retrieves the highest value collected so far
double	lowest() Retrieves the lowest value collected so far
double	mean() Retrieves the mean (average) of the values collected so far
String	name() Retrieves the name given to the Statistic object
double	standardDeviation() Retrieves the standard deviation of the values collected so far
double	sum() Retrieves the sum of the values collected so far

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Statistic

public Statistic(String name)

Constructor

Parameters:

name - String with descriptive name for this object

Method Detail

name

public String name()

Retrieves the name given to the Statistic object

Returns:

the name as a String

lowest

public double lowest()

Retrieves the lowest value collected so far

Returns:

smallest value

highest

public double highest()

Retrieves the highest value collected so far

Returns:

largest value

current

public double current()

Retrieves the most recent value collected

Returns:

current value

sum

public double sum()

Retrieves the sum of the values collected so far

Returns:

the sum

count

public int count()

Retrieves the count of how many values collected so far

Returns:

the count

mean

public double mean()

Retrieves the mean (average) of the values collected so far

Returns:

the mean

standardDeviation

public double standardDeviation()

Retrieves the standard deviation of the values collected so far

Returns:

the standard deviation

collect

public void collect(double value)

Adds a value to the statistic collection

Parameters:

value - the value to be sampled

Postcondition:

statistic object is updated to reflect addition of new value