Module statistics 

Statistical Analysis Module (PROBAR-SPEC-006 Section I)

Implements variance decomposition, Apdex scoring, knee detection, and quantile regression for load test analysis.

Based on research:

• [C8] VProfiler variance trees
• [C9] Treadmill tail latency attribution
• [C12] Tail at Scale methodology

Structs

ApdexCalculator

Apdex (Application Performance Index) calculator

KneeDetector

Knee detector for finding throughput inflection point

LatencySample

Latency sample with component breakdown

QuantileRegression

Quantile regression results

StatisticalAnalysis

Complete statistical analysis

TailAttribution

Tail latency attribution

VarianceComponent

A component in the variance tree

VarianceTree

Hierarchical variance decomposition

Enums

ApdexRating

Apdex rating levels

Functions

render_statistical_json

Render as JSON

render_statistical_report

Render statistical analysis as TUI