Struct average::Moments4

pub struct Moments4 { /* fields omitted */ }

Estimate the first N moments of a sequence of numbers ("population").

Methods

impl Moments4

pub fn new() -> Moments4

Create a new moments estimator.

pub fn is_empty(&self) -> bool

Determine whether the sample is empty.

pub fn len(&self) -> u64

Return the sample size.

pub fn mean(&self) -> f64

Estimate the mean of the population.

Returns 0 for an empty sample.

pub fn central_moment(&self, p: usize) -> f64

Estimate the pth central moment of the population.

pub fn standardized_moment(&self, p: usize) -> f64

Estimate the pth standardized moment of the population.

pub fn sample_variance(&self) -> f64

Calculate the sample variance.

This is an unbiased estimator of the variance of the population.

pub fn sample_skewness(&self) -> f64

Calculate the sample skewness.

pub fn sample_excess_kurtosis(&self) -> f64

Calculate the sample excess kurtosis.

pub fn add(&mut self, x: f64)

Add an observation sampled from the population.

Trait Implementations

impl Merge for Moments4

fn merge(&mut self, other: &Moments4)

impl Debug for Moments4

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl FromIterator<f64> for Moments4

fn from_iter<T>(iter: T) -> Moments4 where
    T: IntoIterator<Item = f64>, 

Creates a value from an iterator.

impl<'a> FromIterator<&'a f64> for Moments4

fn from_iter<T>(iter: T) -> Moments4 where
    T: IntoIterator<Item = &'a f64>, 

Creates a value from an iterator.

impl Clone for Moments4

fn clone(&self) -> Moments4

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for Moments4

fn default() -> Moments4

Returns the "default value" for a type.