Struct TTestPower 

pub struct TTestPower;

Power of a one-sample (or paired) t-test.

effect_size is the standardized mean (Cohen’s d), nobs the sample size, and df defaults to nobs − 1. The power integrates the noncentral t-distribution with noncentrality d·√nobs. Mirrors the reference ttest_power.

Implementations

impl TTestPower

pub fn power( &self, effect_size: f64, nobs: f64, alpha: f64, df: Option<f64>, alternative: Alternative, ) -> f64

Power at the given configuration. df = None uses nobs − 1.

pub fn solve_power( &self, effect_size: f64, alpha: f64, power: f64, alternative: Alternative, ) -> f64

Solve for the sample size nobs that achieves power at the given effect_size and alpha. Inverts the monotone power-in-nobs curve by bracketed bisection (with df = nobs − 1).

Trait Implementations

impl Clone for TTestPower

fn clone(&self) -> TTestPower

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for TTestPower

impl Debug for TTestPower

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

Formats the value using the given formatter.

impl Default for TTestPower

fn default() -> TTestPower

Returns the “default value” for a type.