Composite reliability & AVE API

Computes composite reliability (Raykov's rho / omega) and Average Variance Extracted from standardized factor loadings, with a convergent-validity verdict. Answers 'What is the composite reliability of my latent construct?', 'Does my construct meet the AVE >= 0.5 threshold?'.

Price$0.04per request

MethodPOST

Route/v1/stats/composite-reliability

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

psychometricsreliabilitycomposite-reliabilityavesemfactor-loadingsconstruct-validitycfa

API URLhttps://x402.hexl.dev/v1/stats/composite-reliability

Integration docs

Example request

{
  "loadings": [
    0.7,
    0.8,
    0.75,
    0.9
  ]
}

Example response

{
  "compositeReliability": 0.86887,
  "averageVarianceExtracted": 0.625625,
  "nIndicators": 4,
  "sumLoadings": 3.15,
  "sumSquaredLoadings": 2.5025,
  "sumErrorVariances": 1.4975,
  "convergentValidity": "adequate (AVE >= 0.5)",
  "interpretation": "good internal consistency (composite reliability)"
}

Input schema

{
  "type": "object",
  "required": [
    "loadings"
  ],
  "properties": {
    "loadings": {
      "type": "array",
      "items": {
        "type": "number"
      },
      "description": "standardized factor loadings (-1..1)",
      "examples": [
        [
          0.7,
          0.8,
          0.75,
          0.9
        ]
      ]
    },
    "errorVariances": {
      "type": "array",
      "items": {
        "type": "number"
      },
      "description": "optional; defaults to 1 - loading^2"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}