Struct average::Skewness

pub struct Skewness { /* fields omitted */ }

Estimate the arithmetic mean, the variance and the skewness of a sequence of numbers ("population").

This can be used to estimate the standard error of the mean.

Methods

impl Skewness

fn new() -> Skewness

Create a new skewness estimator.

fn add(&mut self, x: f64)

Add an observation sampled from the population.

fn is_empty(&self) -> bool

Determine whether the sample is empty.

fn mean(&self) -> f64

Estimate the mean of the population.

Returns 0 for an empty sample.

fn len(&self) -> u64

Return the sample size.

fn sample_variance(&self) -> f64

Calculate the sample variance.

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

fn population_variance(&self) -> f64

Calculate the population variance of the sample.

This is a biased estimator of the variance of the population.

fn error_mean(&self) -> f64

Estimate the standard error of the mean of the population.

fn skewness(&self) -> f64

Estimate the skewness of the population.

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

Merge another sample into this one.

Trait Implementations

impl Debug for Skewness

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Skewness

fn clone(&self) -> Skewness

Returns a copy of the value.

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

Performs copy-assignment from source.

impl FromIterator<f64> for Skewness

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

Creates a value from an iterator.