Struct DffitsResult 

pub struct DffitsResult {
    pub test_name: String,
    pub dffits: Vec<f64>,
    pub n: usize,
    pub p: usize,
    pub threshold: f64,
    pub influential_observations: Vec<usize>,
    pub interpretation: String,
    pub guidance: String,
}

Result of DFFITS analysis.

DFFITS measures the influence of each observation on its own fitted value. It is the number of standard errors that the fitted value changes when observation i is omitted.

Fields

• test_name - Name of the diagnostic
• dffits - Vector of DFFITS values (one per observation)
• n - Number of observations
• p - Number of parameters (including intercept)
• threshold - Common threshold (2*√(p/n)) for identifying influential observations
• influential_observations - Indices of observations exceeding the threshold (1-based)
• interpretation - Human-readable explanation of results
• guidance - Recommendations based on results

Example

use linreg_core::diagnostics::DffitsResult;

let result = DffitsResult {
    test_name: "DFFITS".to_string(),
    dffits: vec![0.1, 0.3, 1.2, 0.05, 0.2],
    n: 5,
    p: 2,
    threshold: 1.26,
    influential_observations: vec![],
    interpretation: "No highly influential observations.".to_string(),
    guidance: "Model appears stable.".to_string(),
};

Fields

test_name: String

Name of the test

dffits: Vec<f64>

DFFITS value for each observation

n: usize

Number of observations

p: usize

Number of parameters (including intercept)

threshold: f64

Common threshold: 2*√(p/n)

influential_observations: Vec<usize>

Indices of observations exceeding |DFFITS| > threshold (1-based indexing)

interpretation: String

Interpretation of results

guidance: String

Guidance for handling influential observations

Trait Implementations

impl Clone for DffitsResult

fn clone(&self) -> DffitsResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DffitsResult

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

Formats the value using the given formatter.

impl Serialize for DffitsResult

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.