Enum ConfidenceLevel 

pub enum ConfidenceLevel {
    P90,
    P95,
    P99,
}

A confidence level pinned to one of three fixed two-sided critical values.

A probit implementation (inverse normal CDF) is deliberately out of scope: three levels cover every caller in this train, so the module states the constants directly rather than deriving them numerically (Plan C spec 9.2).

Variants

P90

90% two-sided confidence.

P95

95% two-sided confidence.

P99

99% two-sided confidence.

Implementations

impl ConfidenceLevel

pub fn z(&self) -> f64

The two-sided critical value z such that P(-z <= Z <= z) == 1 - alpha for a standard normal Z.

pub fn alpha(&self) -> f64

The significance level alpha = 1 - confidence.

pub fn as_percent(&self) -> u32

The confidence level as a whole-number percentage (90, 95, or 99).

Trait Implementations

impl Clone for ConfidenceLevel

fn clone(&self) -> ConfidenceLevel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConfidenceLevel

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

Formats the value using the given formatter.

impl PartialEq for ConfidenceLevel

fn eq(&self, other: &ConfidenceLevel) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for ConfidenceLevel

impl Eq for ConfidenceLevel

impl StructuralPartialEq for ConfidenceLevel